Home / 21,049.47-29,035.67-15,377.29

Finding the Fourth Proportional to 21,049.47, 29,035.67 and 15,377.29

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Solution

The fourth proportional to 21,049.47, 29,035.67 and 15,377.29 is: 21,211.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,049.47 : 29,035.67 = 15,377.29 : x
  2. Step 2: Convert to fraction form
    21,049.47/29,035.67 = 15,377.29/x
  3. Step 3: Cross multiply
    21,049.47x = 29,035.67 × 15,377.29
  4. Step 4: Simplify right side
    21,049.47x = 446,489,768.46
  5. Step 5: Solve for x
    x = 446,489,768.46/21,049.47
  6. Step 6: Final answer
    x = 21,211.45

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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.