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Finding the Fourth Proportional to 18,038.70, 24,870.62 and 11,654.50

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Solution

The fourth proportional to 18,038.70, 24,870.62 and 11,654.50 is: 16,068.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,038.70 : 24,870.62 = 11,654.50 : x
  2. Step 2: Convert to fraction form
    18,038.70/24,870.62 = 11,654.50/x
  3. Step 3: Cross multiply
    18,038.70x = 24,870.62 × 11,654.50
  4. Step 4: Simplify right side
    18,038.70x = 289,854,640.79
  5. Step 5: Solve for x
    x = 289,854,640.79/18,038.70
  6. Step 6: Final answer
    x = 16,068.49

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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.