Home / 21,124.28-29,154.11-12,051.87

Finding the Fourth Proportional to 21,124.28, 29,154.11 and 12,051.87

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Solution

The fourth proportional to 21,124.28, 29,154.11 and 12,051.87 is: 16,633.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,124.28 : 29,154.11 = 12,051.87 : x
  2. Step 2: Convert to fraction form
    21,124.28/29,154.11 = 12,051.87/x
  3. Step 3: Cross multiply
    21,124.28x = 29,154.11 × 12,051.87
  4. Step 4: Simplify right side
    21,124.28x = 351,361,483.43
  5. Step 5: Solve for x
    x = 351,361,483.43/21,124.28
  6. Step 6: Final answer
    x = 16,633.07

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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.