Home / 39,486.64-59,254.14-20,780.08

Finding the Fourth Proportional to 39,486.64, 59,254.14 and 20,780.08

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Solution

The fourth proportional to 39,486.64, 59,254.14 and 20,780.08 is: 31,182.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,486.64 : 59,254.14 = 20,780.08 : x
  2. Step 2: Convert to fraction form
    39,486.64/59,254.14 = 20,780.08/x
  3. Step 3: Cross multiply
    39,486.64x = 59,254.14 × 20,780.08
  4. Step 4: Simplify right side
    39,486.64x = 1,231,305,769.53
  5. Step 5: Solve for x
    x = 1,231,305,769.53/39,486.64
  6. Step 6: Final answer
    x = 31,182.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.