Home / 38,985.29-53,799.61-21,080.24

Finding the Fourth Proportional to 38,985.29, 53,799.61 and 21,080.24

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Solution

The fourth proportional to 38,985.29, 53,799.61 and 21,080.24 is: 29,090.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,985.29 : 53,799.61 = 21,080.24 : x
  2. Step 2: Convert to fraction form
    38,985.29/53,799.61 = 21,080.24/x
  3. Step 3: Cross multiply
    38,985.29x = 53,799.61 × 21,080.24
  4. Step 4: Simplify right side
    38,985.29x = 1,134,108,585.31
  5. Step 5: Solve for x
    x = 1,134,108,585.31/38,985.29
  6. Step 6: Final answer
    x = 29,090.68

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Half scale
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Double scale
Find fourth proportional to 38,986.29, 53,800.98 and 21,081.24
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.