Home / 14,008.82-19,331.90-7,721.20

Finding the Fourth Proportional to 14,008.82, 19,331.90 and 7,721.20

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Solution

The fourth proportional to 14,008.82, 19,331.90 and 7,721.20 is: 10,655.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,008.82 : 19,331.90 = 7,721.20 : x
  2. Step 2: Convert to fraction form
    14,008.82/19,331.90 = 7,721.20/x
  3. Step 3: Cross multiply
    14,008.82x = 19,331.90 × 7,721.20
  4. Step 4: Simplify right side
    14,008.82x = 149,265,331.01
  5. Step 5: Solve for x
    x = 149,265,331.01/14,008.82
  6. Step 6: Final answer
    x = 10,655.10

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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.