Home / 28,357.53-39,134.31-15,612.02

Finding the Fourth Proportional to 28,357.53, 39,134.31 and 15,612.02

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Solution

The fourth proportional to 28,357.53, 39,134.31 and 15,612.02 is: 21,545.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,357.53 : 39,134.31 = 15,612.02 : x
  2. Step 2: Convert to fraction form
    28,357.53/39,134.31 = 15,612.02/x
  3. Step 3: Cross multiply
    28,357.53x = 39,134.31 × 15,612.02
  4. Step 4: Simplify right side
    28,357.53x = 610,965,668.43
  5. Step 5: Solve for x
    x = 610,965,668.43/28,357.53
  6. Step 6: Final answer
    x = 21,545.09

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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.