Home / 13,351.91-18,427.02-7,686.86

Finding the Fourth Proportional to 13,351.91, 18,427.02 and 7,686.86

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Solution

The fourth proportional to 13,351.91, 18,427.02 and 7,686.86 is: 10,608.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,351.91 : 18,427.02 = 7,686.86 : x
  2. Step 2: Convert to fraction form
    13,351.91/18,427.02 = 7,686.86/x
  3. Step 3: Cross multiply
    13,351.91x = 18,427.02 × 7,686.86
  4. Step 4: Simplify right side
    13,351.91x = 141,645,922.96
  5. Step 5: Solve for x
    x = 141,645,922.96/13,351.91
  6. Step 6: Final answer
    x = 10,608.66

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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.