Home / 18,861.04-28,291.56-5,714.74

Finding the Fourth Proportional to 18,861.04, 28,291.56 and 5,714.74

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Solution

The fourth proportional to 18,861.04, 28,291.56 and 5,714.74 is: 8,572.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,861.04 : 28,291.56 = 5,714.74 : x
  2. Step 2: Convert to fraction form
    18,861.04/28,291.56 = 5,714.74/x
  3. Step 3: Cross multiply
    18,861.04x = 28,291.56 × 5,714.74
  4. Step 4: Simplify right side
    18,861.04x = 161,678,909.59
  5. Step 5: Solve for x
    x = 161,678,909.59/18,861.04
  6. Step 6: Final answer
    x = 8,572.11

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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.