Home / 20,062.98-27,686.40-10,988.28

Finding the Fourth Proportional to 20,062.98, 27,686.40 and 10,988.28

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Solution

The fourth proportional to 20,062.98, 27,686.40 and 10,988.28 is: 15,163.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,062.98 : 27,686.40 = 10,988.28 : x
  2. Step 2: Convert to fraction form
    20,062.98/27,686.40 = 10,988.28/x
  3. Step 3: Cross multiply
    20,062.98x = 27,686.40 × 10,988.28
  4. Step 4: Simplify right side
    20,062.98x = 304,225,915.39
  5. Step 5: Solve for x
    x = 304,225,915.39/20,062.98
  6. Step 6: Final answer
    x = 15,163.55

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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.