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Finding the Fourth Proportional to 26,440, 36,487.20 and 15,262

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Solution

The fourth proportional to 26,440, 36,487.20 and 15,262 is: 21,061.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,440 : 36,487.20 = 15,262 : x
  2. Step 2: Convert to fraction form
    26,440/36,487.20 = 15,262/x
  3. Step 3: Cross multiply
    26,440x = 36,487.20 × 15,262
  4. Step 4: Simplify right side
    26,440x = 556,867,646.40
  5. Step 5: Solve for x
    x = 556,867,646.40/26,440
  6. Step 6: Final answer
    x = 21,061.56

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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.