Home / 13,120.52-19,677.90-5,331.08

Finding the Fourth Proportional to 13,120.52, 19,677.90 and 5,331.08

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Solution

The fourth proportional to 13,120.52, 19,677.90 and 5,331.08 is: 7,995.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,120.52 : 19,677.90 = 5,331.08 : x
  2. Step 2: Convert to fraction form
    13,120.52/19,677.90 = 5,331.08/x
  3. Step 3: Cross multiply
    13,120.52x = 19,677.90 × 5,331.08
  4. Step 4: Simplify right side
    13,120.52x = 104,904,459.13
  5. Step 5: Solve for x
    x = 104,904,459.13/13,120.52
  6. Step 6: Final answer
    x = 7,995.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.