Home / 21,331.98-29,428.58-12,374.28

Finding the Fourth Proportional to 21,331.98, 29,428.58 and 12,374.28

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Solution

The fourth proportional to 21,331.98, 29,428.58 and 12,374.28 is: 17,070.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,331.98 : 29,428.58 = 12,374.28 : x
  2. Step 2: Convert to fraction form
    21,331.98/29,428.58 = 12,374.28/x
  3. Step 3: Cross multiply
    21,331.98x = 29,428.58 × 12,374.28
  4. Step 4: Simplify right side
    21,331.98x = 364,157,488.92
  5. Step 5: Solve for x
    x = 364,157,488.92/21,331.98
  6. Step 6: Final answer
    x = 17,070.97

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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.