Home / 12,531.32-18,789.68-4,740.74

Finding the Fourth Proportional to 12,531.32, 18,789.68 and 4,740.74

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Solution

The fourth proportional to 12,531.32, 18,789.68 and 4,740.74 is: 7,108.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,531.32 : 18,789.68 = 4,740.74 : x
  2. Step 2: Convert to fraction form
    12,531.32/18,789.68 = 4,740.74/x
  3. Step 3: Cross multiply
    12,531.32x = 18,789.68 × 4,740.74
  4. Step 4: Simplify right side
    12,531.32x = 89,076,869.91
  5. Step 5: Solve for x
    x = 89,076,869.91/12,531.32
  6. Step 6: Final answer
    x = 7,108.34

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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.