Home / 39,415.95-54,393.57-21,511.71

Finding the Fourth Proportional to 39,415.95, 54,393.57 and 21,511.71

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Solution

The fourth proportional to 39,415.95, 54,393.57 and 21,511.71 is: 29,685.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,415.95 : 54,393.57 = 21,511.71 : x
  2. Step 2: Convert to fraction form
    39,415.95/54,393.57 = 21,511.71/x
  3. Step 3: Cross multiply
    39,415.95x = 54,393.57 × 21,511.71
  4. Step 4: Simplify right side
    39,415.95x = 1,170,098,703.70
  5. Step 5: Solve for x
    x = 1,170,098,703.70/39,415.95
  6. Step 6: Final answer
    x = 29,685.92

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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.