Home / 15,459.80-23,198.10-8,439.40

Finding the Fourth Proportional to 15,459.80, 23,198.10 and 8,439.40

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Solution

The fourth proportional to 15,459.80, 23,198.10 and 8,439.40 is: 12,663.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,459.80 : 23,198.10 = 8,439.40 : x
  2. Step 2: Convert to fraction form
    15,459.80/23,198.10 = 8,439.40/x
  3. Step 3: Cross multiply
    15,459.80x = 23,198.10 × 8,439.40
  4. Step 4: Simplify right side
    15,459.80x = 195,778,045.14
  5. Step 5: Solve for x
    x = 195,778,045.14/15,459.80
  6. Step 6: Final answer
    x = 12,663.69

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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.