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Finding the Fourth Proportional to 10,686.10, 14,737.23 and 8,899.48

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Solution

The fourth proportional to 10,686.10, 14,737.23 and 8,899.48 is: 12,273.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,686.10 : 14,737.23 = 8,899.48 : x
  2. Step 2: Convert to fraction form
    10,686.10/14,737.23 = 8,899.48/x
  3. Step 3: Cross multiply
    10,686.10x = 14,737.23 × 8,899.48
  4. Step 4: Simplify right side
    10,686.10x = 131,153,683.64
  5. Step 5: Solve for x
    x = 131,153,683.64/10,686.10
  6. Step 6: Final answer
    x = 12,273.30

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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.