Home / 21,708.12-29,947.68-16,663.44

Finding the Fourth Proportional to 21,708.12, 29,947.68 and 16,663.44

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Solution

The fourth proportional to 21,708.12, 29,947.68 and 16,663.44 is: 22,988.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,708.12 : 29,947.68 = 16,663.44 : x
  2. Step 2: Convert to fraction form
    21,708.12/29,947.68 = 16,663.44/x
  3. Step 3: Cross multiply
    21,708.12x = 29,947.68 × 16,663.44
  4. Step 4: Simplify right side
    21,708.12x = 499,031,368.82
  5. Step 5: Solve for x
    x = 499,031,368.82/21,708.12
  6. Step 6: Final answer
    x = 22,988.24

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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.