Home / 21,609.90-29,753.80-18,373.35

Finding the Fourth Proportional to 21,609.90, 29,753.80 and 18,373.35

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Solution

The fourth proportional to 21,609.90, 29,753.80 and 18,373.35 is: 25,297.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,609.90 : 29,753.80 = 18,373.35 : x
  2. Step 2: Convert to fraction form
    21,609.90/29,753.80 = 18,373.35/x
  3. Step 3: Cross multiply
    21,609.90x = 29,753.80 × 18,373.35
  4. Step 4: Simplify right side
    21,609.90x = 546,676,981.23
  5. Step 5: Solve for x
    x = 546,676,981.23/21,609.90
  6. Step 6: Final answer
    x = 25,297.52

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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.