Home / 38,985.66-53,800.16-21,080.62

Finding the Fourth Proportional to 38,985.66, 53,800.16 and 21,080.62

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Solution

The fourth proportional to 38,985.66, 53,800.16 and 21,080.62 is: 29,091.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,985.66 : 53,800.16 = 21,080.62 : x
  2. Step 2: Convert to fraction form
    38,985.66/53,800.16 = 21,080.62/x
  3. Step 3: Cross multiply
    38,985.66x = 53,800.16 × 21,080.62
  4. Step 4: Simplify right side
    38,985.66x = 1,134,140,728.90
  5. Step 5: Solve for x
    x = 1,134,140,728.90/38,985.66
  6. Step 6: Final answer
    x = 29,091.23

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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.