Home / 21,207.76-29,330.20-18,550.52

Finding the Fourth Proportional to 21,207.76, 29,330.20 and 18,550.52

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Solution

The fourth proportional to 21,207.76, 29,330.20 and 18,550.52 is: 25,655.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,207.76 : 29,330.20 = 18,550.52 : x
  2. Step 2: Convert to fraction form
    21,207.76/29,330.20 = 18,550.52/x
  3. Step 3: Cross multiply
    21,207.76x = 29,330.20 × 18,550.52
  4. Step 4: Simplify right side
    21,207.76x = 544,090,461.70
  5. Step 5: Solve for x
    x = 544,090,461.70/21,207.76
  6. Step 6: Final answer
    x = 25,655.25

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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.