Home / 12,438.45-17,162.10-7,059.71

Finding the Fourth Proportional to 12,438.45, 17,162.10 and 7,059.71

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Solution

The fourth proportional to 12,438.45, 17,162.10 and 7,059.71 is: 9,740.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,438.45 : 17,162.10 = 7,059.71 : x
  2. Step 2: Convert to fraction form
    12,438.45/17,162.10 = 7,059.71/x
  3. Step 3: Cross multiply
    12,438.45x = 17,162.10 × 7,059.71
  4. Step 4: Simplify right side
    12,438.45x = 121,159,363.18
  5. Step 5: Solve for x
    x = 121,159,363.18/12,438.45
  6. Step 6: Final answer
    x = 9,740.71

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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.