Home / 20,349.52-30,575.40-12,957.28

Finding the Fourth Proportional to 20,349.52, 30,575.40 and 12,957.28

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Solution

The fourth proportional to 20,349.52, 30,575.40 and 12,957.28 is: 19,468.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,349.52 : 30,575.40 = 12,957.28 : x
  2. Step 2: Convert to fraction form
    20,349.52/30,575.40 = 12,957.28/x
  3. Step 3: Cross multiply
    20,349.52x = 30,575.40 × 12,957.28
  4. Step 4: Simplify right side
    20,349.52x = 396,174,018.91
  5. Step 5: Solve for x
    x = 396,174,018.91/20,349.52
  6. Step 6: Final answer
    x = 19,468.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.