Home / 21,502.20-29,672.55-12,069.75

Finding the Fourth Proportional to 21,502.20, 29,672.55 and 12,069.75

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Solution

The fourth proportional to 21,502.20, 29,672.55 and 12,069.75 is: 16,655.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,502.20 : 29,672.55 = 12,069.75 : x
  2. Step 2: Convert to fraction form
    21,502.20/29,672.55 = 12,069.75/x
  3. Step 3: Cross multiply
    21,502.20x = 29,672.55 × 12,069.75
  4. Step 4: Simplify right side
    21,502.20x = 358,140,260.36
  5. Step 5: Solve for x
    x = 358,140,260.36/21,502.20
  6. Step 6: Final answer
    x = 16,655.98

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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.