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Finding the Fourth Proportional to 10,775.60, 14,911.80 and 10,516.40

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Solution

The fourth proportional to 10,775.60, 14,911.80 and 10,516.40 is: 14,553.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,775.60 : 14,911.80 = 10,516.40 : x
  2. Step 2: Convert to fraction form
    10,775.60/14,911.80 = 10,516.40/x
  3. Step 3: Cross multiply
    10,775.60x = 14,911.80 × 10,516.40
  4. Step 4: Simplify right side
    10,775.60x = 156,818,453.52
  5. Step 5: Solve for x
    x = 156,818,453.52/10,775.60
  6. Step 6: Final answer
    x = 14,553.11

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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.