Home / 38,985.93-53,800.61-21,081.08

Finding the Fourth Proportional to 38,985.93, 53,800.61 and 21,081.08

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Solution

The fourth proportional to 38,985.93, 53,800.61 and 21,081.08 is: 29,091.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,985.93 : 53,800.61 = 21,081.08 : x
  2. Step 2: Convert to fraction form
    38,985.93/53,800.61 = 21,081.08/x
  3. Step 3: Cross multiply
    38,985.93x = 53,800.61 × 21,081.08
  4. Step 4: Simplify right side
    38,985.93x = 1,134,174,992.55
  5. Step 5: Solve for x
    x = 1,134,174,992.55/38,985.93
  6. Step 6: Final answer
    x = 29,091.91

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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.