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Finding the Fourth Proportional to 18,337.60, 27,503.70 and 5,191.30

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Solution

The fourth proportional to 18,337.60, 27,503.70 and 5,191.30 is: 7,786.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,337.60 : 27,503.70 = 5,191.30 : x
  2. Step 2: Convert to fraction form
    18,337.60/27,503.70 = 5,191.30/x
  3. Step 3: Cross multiply
    18,337.60x = 27,503.70 × 5,191.30
  4. Step 4: Simplify right side
    18,337.60x = 142,779,957.81
  5. Step 5: Solve for x
    x = 142,779,957.81/18,337.60
  6. Step 6: Final answer
    x = 7,786.19

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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.