Home / 39,356.17-54,311.78-21,451.12

Finding the Fourth Proportional to 39,356.17, 54,311.78 and 21,451.12

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Solution

The fourth proportional to 39,356.17, 54,311.78 and 21,451.12 is: 29,602.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,356.17 : 54,311.78 = 21,451.12 : x
  2. Step 2: Convert to fraction form
    39,356.17/54,311.78 = 21,451.12/x
  3. Step 3: Cross multiply
    39,356.17x = 54,311.78 × 21,451.12
  4. Step 4: Simplify right side
    39,356.17x = 1,165,048,510.19
  5. Step 5: Solve for x
    x = 1,165,048,510.19/39,356.17
  6. Step 6: Final answer
    x = 29,602.69

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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.