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Finding the Fourth Proportional to 14,501.92, 20,020.08 and 8,916.16

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Solution

The fourth proportional to 14,501.92, 20,020.08 and 8,916.16 is: 12,308.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,501.92 : 20,020.08 = 8,916.16 : x
  2. Step 2: Convert to fraction form
    14,501.92/20,020.08 = 8,916.16/x
  3. Step 3: Cross multiply
    14,501.92x = 20,020.08 × 8,916.16
  4. Step 4: Simplify right side
    14,501.92x = 178,502,236.49
  5. Step 5: Solve for x
    x = 178,502,236.49/14,501.92
  6. Step 6: Final answer
    x = 12,308.87

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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.