Home / 21,542.40-29,730.24-12,110.40

Finding the Fourth Proportional to 21,542.40, 29,730.24 and 12,110.40

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Solution

The fourth proportional to 21,542.40, 29,730.24 and 12,110.40 is: 16,713.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,542.40 : 29,730.24 = 12,110.40 : x
  2. Step 2: Convert to fraction form
    21,542.40/29,730.24 = 12,110.40/x
  3. Step 3: Cross multiply
    21,542.40x = 29,730.24 × 12,110.40
  4. Step 4: Simplify right side
    21,542.40x = 360,045,098.50
  5. Step 5: Solve for x
    x = 360,045,098.50/21,542.40
  6. Step 6: Final answer
    x = 16,713.32

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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.