Home / 28,214.52-38,937.38-15,639.28

Finding the Fourth Proportional to 28,214.52, 38,937.38 and 15,639.28

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Solution

The fourth proportional to 28,214.52, 38,937.38 and 15,639.28 is: 21,582.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,214.52 : 38,937.38 = 15,639.28 : x
  2. Step 2: Convert to fraction form
    28,214.52/38,937.38 = 15,639.28/x
  3. Step 3: Cross multiply
    28,214.52x = 38,937.38 × 15,639.28
  4. Step 4: Simplify right side
    28,214.52x = 608,952,588.29
  5. Step 5: Solve for x
    x = 608,952,588.29/28,214.52
  6. Step 6: Final answer
    x = 21,582.95

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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.