Home / 10,006.40-13,812.72-8,956.64

Finding the Fourth Proportional to 10,006.40, 13,812.72 and 8,956.64

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Solution

The fourth proportional to 10,006.40, 13,812.72 and 8,956.64 is: 12,363.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,006.40 : 13,812.72 = 8,956.64 : x
  2. Step 2: Convert to fraction form
    10,006.40/13,812.72 = 8,956.64/x
  3. Step 3: Cross multiply
    10,006.40x = 13,812.72 × 8,956.64
  4. Step 4: Simplify right side
    10,006.40x = 123,715,560.46
  5. Step 5: Solve for x
    x = 123,715,560.46/10,006.40
  6. Step 6: Final answer
    x = 12,363.64

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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.