Home / 39,225.71-54,131.82-21,320.75

Finding the Fourth Proportional to 39,225.71, 54,131.82 and 21,320.75

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Solution

The fourth proportional to 39,225.71, 54,131.82 and 21,320.75 is: 29,422.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,225.71 : 54,131.82 = 21,320.75 : x
  2. Step 2: Convert to fraction form
    39,225.71/54,131.82 = 21,320.75/x
  3. Step 3: Cross multiply
    39,225.71x = 54,131.82 × 21,320.75
  4. Step 4: Simplify right side
    39,225.71x = 1,154,130,730.61
  5. Step 5: Solve for x
    x = 1,154,130,730.61/39,225.71
  6. Step 6: Final answer
    x = 29,422.82

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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.