Home / 12,621.66-17,417.82-7,319.55

Finding the Fourth Proportional to 12,621.66, 17,417.82 and 7,319.55

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Solution

The fourth proportional to 12,621.66, 17,417.82 and 7,319.55 is: 10,100.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,621.66 : 17,417.82 = 7,319.55 : x
  2. Step 2: Convert to fraction form
    12,621.66/17,417.82 = 7,319.55/x
  3. Step 3: Cross multiply
    12,621.66x = 17,417.82 × 7,319.55
  4. Step 4: Simplify right side
    12,621.66x = 127,490,604.38
  5. Step 5: Solve for x
    x = 127,490,604.38/12,621.66
  6. Step 6: Final answer
    x = 10,100.94

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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.