Home / 39,428.32-54,398.16-28,099.60

Finding the Fourth Proportional to 39,428.32, 54,398.16 and 28,099.60

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Solution

The fourth proportional to 39,428.32, 54,398.16 and 28,099.60 is: 38,768.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,428.32 : 54,398.16 = 28,099.60 : x
  2. Step 2: Convert to fraction form
    39,428.32/54,398.16 = 28,099.60/x
  3. Step 3: Cross multiply
    39,428.32x = 54,398.16 × 28,099.60
  4. Step 4: Simplify right side
    39,428.32x = 1,528,566,536.74
  5. Step 5: Solve for x
    x = 1,528,566,536.74/39,428.32
  6. Step 6: Final answer
    x = 38,768.24

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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.