Home / 39,288.92-54,218.86-21,384.14

Finding the Fourth Proportional to 39,288.92, 54,218.86 and 21,384.14

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Solution

The fourth proportional to 39,288.92, 54,218.86 and 21,384.14 is: 29,510.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,288.92 : 54,218.86 = 21,384.14 : x
  2. Step 2: Convert to fraction form
    39,288.92/54,218.86 = 21,384.14/x
  3. Step 3: Cross multiply
    39,288.92x = 54,218.86 × 21,384.14
  4. Step 4: Simplify right side
    39,288.92x = 1,159,423,692.88
  5. Step 5: Solve for x
    x = 1,159,423,692.88/39,288.92
  6. Step 6: Final answer
    x = 29,510.20

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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.