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Finding the Fourth Proportional to 12,869.69, 17,760.96 and 7,492.23

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Solution

The fourth proportional to 12,869.69, 17,760.96 and 7,492.23 is: 10,339.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,869.69 : 17,760.96 = 7,492.23 : x
  2. Step 2: Convert to fraction form
    12,869.69/17,760.96 = 7,492.23/x
  3. Step 3: Cross multiply
    12,869.69x = 17,760.96 × 7,492.23
  4. Step 4: Simplify right side
    12,869.69x = 133,069,197.34
  5. Step 5: Solve for x
    x = 133,069,197.34/12,869.69
  6. Step 6: Final answer
    x = 10,339.74

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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.