Home / 26,330.80-36,312.42-20,589

Finding the Fourth Proportional to 26,330.80, 36,312.42 and 20,589

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Solution

The fourth proportional to 26,330.80, 36,312.42 and 20,589 is: 28,393.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,330.80 : 36,312.42 = 20,589 : x
  2. Step 2: Convert to fraction form
    26,330.80/36,312.42 = 20,589/x
  3. Step 3: Cross multiply
    26,330.80x = 36,312.42 × 20,589
  4. Step 4: Simplify right side
    26,330.80x = 747,636,415.38
  5. Step 5: Solve for x
    x = 747,636,415.38/26,330.80
  6. Step 6: Final answer
    x = 28,393.99

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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.