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Finding the Fourth Proportional to 12,325.13, 17,008.67 and 7,916.81

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Solution

The fourth proportional to 12,325.13, 17,008.67 and 7,916.81 is: 10,925.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,325.13 : 17,008.67 = 7,916.81 : x
  2. Step 2: Convert to fraction form
    12,325.13/17,008.67 = 7,916.81/x
  3. Step 3: Cross multiply
    12,325.13x = 17,008.67 × 7,916.81
  4. Step 4: Simplify right side
    12,325.13x = 134,654,343.49
  5. Step 5: Solve for x
    x = 134,654,343.49/12,325.13
  6. Step 6: Final answer
    x = 10,925.19

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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.