Home / 13,331.04-19,979.25-5,424.35

Finding the Fourth Proportional to 13,331.04, 19,979.25 and 5,424.35

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Solution

The fourth proportional to 13,331.04, 19,979.25 and 5,424.35 is: 8,129.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,331.04 : 19,979.25 = 5,424.35 : x
  2. Step 2: Convert to fraction form
    13,331.04/19,979.25 = 5,424.35/x
  3. Step 3: Cross multiply
    13,331.04x = 19,979.25 × 5,424.35
  4. Step 4: Simplify right side
    13,331.04x = 108,374,344.84
  5. Step 5: Solve for x
    x = 108,374,344.84/13,331.04
  6. Step 6: Final answer
    x = 8,129.47

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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.