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Finding the Fourth Proportional to 26,420, 36,459.68 and 15,244.16

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Solution

The fourth proportional to 26,420, 36,459.68 and 15,244.16 is: 21,036.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,420 : 36,459.68 = 15,244.16 : x
  2. Step 2: Convert to fraction form
    26,420/36,459.68 = 15,244.16/x
  3. Step 3: Cross multiply
    26,420x = 36,459.68 × 15,244.16
  4. Step 4: Simplify right side
    26,420x = 555,797,195.47
  5. Step 5: Solve for x
    x = 555,797,195.47/26,420
  6. Step 6: Final answer
    x = 21,036.99

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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.