Home / 21,443.56-29,607.80-15,488.44

Finding the Fourth Proportional to 21,443.56, 29,607.80 and 15,488.44

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Solution

The fourth proportional to 21,443.56, 29,607.80 and 15,488.44 is: 21,385.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,443.56 : 29,607.80 = 15,488.44 : x
  2. Step 2: Convert to fraction form
    21,443.56/29,607.80 = 15,488.44/x
  3. Step 3: Cross multiply
    21,443.56x = 29,607.80 × 15,488.44
  4. Step 4: Simplify right side
    21,443.56x = 458,578,633.83
  5. Step 5: Solve for x
    x = 458,578,633.83/21,443.56
  6. Step 6: Final answer
    x = 21,385.38

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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.