Home / 21,146.98-29,182.81-11,587.47

Finding the Fourth Proportional to 21,146.98, 29,182.81 and 11,587.47

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Solution

The fourth proportional to 21,146.98, 29,182.81 and 11,587.47 is: 15,990.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,146.98 : 29,182.81 = 11,587.47 : x
  2. Step 2: Convert to fraction form
    21,146.98/29,182.81 = 11,587.47/x
  3. Step 3: Cross multiply
    21,146.98x = 29,182.81 × 11,587.47
  4. Step 4: Simplify right side
    21,146.98x = 338,154,935.39
  5. Step 5: Solve for x
    x = 338,154,935.39/21,146.98
  6. Step 6: Final answer
    x = 15,990.70

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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.