Home / 13,160.98-18,162.18-7,192.78

Finding the Fourth Proportional to 13,160.98, 18,162.18 and 7,192.78

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Solution

The fourth proportional to 13,160.98, 18,162.18 and 7,192.78 is: 9,926.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,160.98 : 18,162.18 = 7,192.78 : x
  2. Step 2: Convert to fraction form
    13,160.98/18,162.18 = 7,192.78/x
  3. Step 3: Cross multiply
    13,160.98x = 18,162.18 × 7,192.78
  4. Step 4: Simplify right side
    13,160.98x = 130,636,565.06
  5. Step 5: Solve for x
    x = 130,636,565.06/13,160.98
  6. Step 6: Final answer
    x = 9,926.05

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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.