Home / 12,618.20-17,412.88-6,953.47

Finding the Fourth Proportional to 12,618.20, 17,412.88 and 6,953.47

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Solution

The fourth proportional to 12,618.20, 17,412.88 and 6,953.47 is: 9,595.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,618.20 : 17,412.88 = 6,953.47 : x
  2. Step 2: Convert to fraction form
    12,618.20/17,412.88 = 6,953.47/x
  3. Step 3: Cross multiply
    12,618.20x = 17,412.88 × 6,953.47
  4. Step 4: Simplify right side
    12,618.20x = 121,079,969.15
  5. Step 5: Solve for x
    x = 121,079,969.15/12,618.20
  6. Step 6: Final answer
    x = 9,595.66

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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.