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Finding the Fourth Proportional to 14,576.76, 20,117.16 and 11,916.72

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Solution

The fourth proportional to 14,576.76, 20,117.16 and 11,916.72 is: 16,446.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,576.76 : 20,117.16 = 11,916.72 : x
  2. Step 2: Convert to fraction form
    14,576.76/20,117.16 = 11,916.72/x
  3. Step 3: Cross multiply
    14,576.76x = 20,117.16 × 11,916.72
  4. Step 4: Simplify right side
    14,576.76x = 239,730,562.92
  5. Step 5: Solve for x
    x = 239,730,562.92/14,576.76
  6. Step 6: Final answer
    x = 16,446.08

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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.