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Finding the Fourth Proportional to 18,607.68, 25,677 and 11,534.40

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Solution

The fourth proportional to 18,607.68, 25,677 and 11,534.40 is: 15,916.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,607.68 : 25,677 = 11,534.40 : x
  2. Step 2: Convert to fraction form
    18,607.68/25,677 = 11,534.40/x
  3. Step 3: Cross multiply
    18,607.68x = 25,677 × 11,534.40
  4. Step 4: Simplify right side
    18,607.68x = 296,168,788.80
  5. Step 5: Solve for x
    x = 296,168,788.80/18,607.68
  6. Step 6: Final answer
    x = 15,916.48

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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.