Home / 12,602.20-17,390.69-6,859.46

Finding the Fourth Proportional to 12,602.20, 17,390.69 and 6,859.46

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Solution

The fourth proportional to 12,602.20, 17,390.69 and 6,859.46 is: 9,465.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,602.20 : 17,390.69 = 6,859.46 : x
  2. Step 2: Convert to fraction form
    12,602.20/17,390.69 = 6,859.46/x
  3. Step 3: Cross multiply
    12,602.20x = 17,390.69 × 6,859.46
  4. Step 4: Simplify right side
    12,602.20x = 119,290,751.61
  5. Step 5: Solve for x
    x = 119,290,751.61/12,602.20
  6. Step 6: Final answer
    x = 9,465.87

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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.