Home / 13,124.20-19,695.90-8,740.20

Finding the Fourth Proportional to 13,124.20, 19,695.90 and 8,740.20

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Solution

The fourth proportional to 13,124.20, 19,695.90 and 8,740.20 is: 13,116.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,124.20 : 19,695.90 = 8,740.20 : x
  2. Step 2: Convert to fraction form
    13,124.20/19,695.90 = 8,740.20/x
  3. Step 3: Cross multiply
    13,124.20x = 19,695.90 × 8,740.20
  4. Step 4: Simplify right side
    13,124.20x = 172,146,105.18
  5. Step 5: Solve for x
    x = 172,146,105.18/13,124.20
  6. Step 6: Final answer
    x = 13,116.69

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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.