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Finding the Fourth Proportional to 18,859.61, 26,026.68 and 10,902.17

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Solution

The fourth proportional to 18,859.61, 26,026.68 and 10,902.17 is: 15,045.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,859.61 : 26,026.68 = 10,902.17 : x
  2. Step 2: Convert to fraction form
    18,859.61/26,026.68 = 10,902.17/x
  3. Step 3: Cross multiply
    18,859.61x = 26,026.68 × 10,902.17
  4. Step 4: Simplify right side
    18,859.61x = 283,747,159.76
  5. Step 5: Solve for x
    x = 283,747,159.76/18,859.61
  6. Step 6: Final answer
    x = 15,045.23

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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.