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Finding the Fourth Proportional to 14,138.59, 21,207.87 and 8,292.01

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Solution

The fourth proportional to 14,138.59, 21,207.87 and 8,292.01 is: 12,438.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,138.59 : 21,207.87 = 8,292.01 : x
  2. Step 2: Convert to fraction form
    14,138.59/21,207.87 = 8,292.01/x
  3. Step 3: Cross multiply
    14,138.59x = 21,207.87 × 8,292.01
  4. Step 4: Simplify right side
    14,138.59x = 175,855,870.12
  5. Step 5: Solve for x
    x = 175,855,870.12/14,138.59
  6. Step 6: Final answer
    x = 12,438.01

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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.