Home / 21,471.14-29,615.18-20,748.62

Finding the Fourth Proportional to 21,471.14, 29,615.18 and 20,748.62

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Solution

The fourth proportional to 21,471.14, 29,615.18 and 20,748.62 is: 28,618.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,471.14 : 29,615.18 = 20,748.62 : x
  2. Step 2: Convert to fraction form
    21,471.14/29,615.18 = 20,748.62/x
  3. Step 3: Cross multiply
    21,471.14x = 29,615.18 × 20,748.62
  4. Step 4: Simplify right side
    21,471.14x = 614,473,864.23
  5. Step 5: Solve for x
    x = 614,473,864.23/21,471.14
  6. Step 6: Final answer
    x = 28,618.60

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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.