Home / 21,095.68-29,109.18-17,921.80

Finding the Fourth Proportional to 21,095.68, 29,109.18 and 17,921.80

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Solution

The fourth proportional to 21,095.68, 29,109.18 and 17,921.80 is: 24,729.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,095.68 : 29,109.18 = 17,921.80 : x
  2. Step 2: Convert to fraction form
    21,095.68/29,109.18 = 17,921.80/x
  3. Step 3: Cross multiply
    21,095.68x = 29,109.18 × 17,921.80
  4. Step 4: Simplify right side
    21,095.68x = 521,688,902.12
  5. Step 5: Solve for x
    x = 521,688,902.12/21,095.68
  6. Step 6: Final answer
    x = 24,729.66

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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.