Home / 21,124.04-29,151.15-12,171.92

Finding the Fourth Proportional to 21,124.04, 29,151.15 and 12,171.92

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Solution

The fourth proportional to 21,124.04, 29,151.15 and 12,171.92 is: 16,797.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,124.04 : 29,151.15 = 12,171.92 : x
  2. Step 2: Convert to fraction form
    21,124.04/29,151.15 = 12,171.92/x
  3. Step 3: Cross multiply
    21,124.04x = 29,151.15 × 12,171.92
  4. Step 4: Simplify right side
    21,124.04x = 354,825,465.71
  5. Step 5: Solve for x
    x = 354,825,465.71/21,124.04
  6. Step 6: Final answer
    x = 16,797.24

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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.