Home / 28,207.04-38,925.12-15,631.52

Finding the Fourth Proportional to 28,207.04, 38,925.12 and 15,631.52

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Solution

The fourth proportional to 28,207.04, 38,925.12 and 15,631.52 is: 21,571.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,207.04 : 38,925.12 = 15,631.52 : x
  2. Step 2: Convert to fraction form
    28,207.04/38,925.12 = 15,631.52/x
  3. Step 3: Cross multiply
    28,207.04x = 38,925.12 × 15,631.52
  4. Step 4: Simplify right side
    28,207.04x = 608,458,791.78
  5. Step 5: Solve for x
    x = 608,458,791.78/28,207.04
  6. Step 6: Final answer
    x = 21,571.17

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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.