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Finding the Fourth Proportional to 26,490.80, 36,541.07 and 15,728.36

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Solution

The fourth proportional to 26,490.80, 36,541.07 and 15,728.36 is: 21,695.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,490.80 : 36,541.07 = 15,728.36 : x
  2. Step 2: Convert to fraction form
    26,490.80/36,541.07 = 15,728.36/x
  3. Step 3: Cross multiply
    26,490.80x = 36,541.07 × 15,728.36
  4. Step 4: Simplify right side
    26,490.80x = 574,731,195.39
  5. Step 5: Solve for x
    x = 574,731,195.39/26,490.80
  6. Step 6: Final answer
    x = 21,695.50

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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.