Home / 21,385.95-32,078.94-11,529.87

Finding the Fourth Proportional to 21,385.95, 32,078.94 and 11,529.87

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Solution

The fourth proportional to 21,385.95, 32,078.94 and 11,529.87 is: 17,294.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,385.95 : 32,078.94 = 11,529.87 : x
  2. Step 2: Convert to fraction form
    21,385.95/32,078.94 = 11,529.87/x
  3. Step 3: Cross multiply
    21,385.95x = 32,078.94 × 11,529.87
  4. Step 4: Simplify right side
    21,385.95x = 369,866,007.94
  5. Step 5: Solve for x
    x = 369,866,007.94/21,385.95
  6. Step 6: Final answer
    x = 17,294.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.