Home / 39,403.84-54,382.08-28,788.16

Finding the Fourth Proportional to 39,403.84, 54,382.08 and 28,788.16

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Solution

The fourth proportional to 39,403.84, 54,382.08 and 28,788.16 is: 39,731.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,403.84 : 54,382.08 = 28,788.16 : x
  2. Step 2: Convert to fraction form
    39,403.84/54,382.08 = 28,788.16/x
  3. Step 3: Cross multiply
    39,403.84x = 54,382.08 × 28,788.16
  4. Step 4: Simplify right side
    39,403.84x = 1,565,560,020.17
  5. Step 5: Solve for x
    x = 1,565,560,020.17/39,403.84
  6. Step 6: Final answer
    x = 39,731.15

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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.