Home / 13,351.90-18,425.17-7,685.86

Finding the Fourth Proportional to 13,351.90, 18,425.17 and 7,685.86

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Solution

The fourth proportional to 13,351.90, 18,425.17 and 7,685.86 is: 10,606.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,351.90 : 18,425.17 = 7,685.86 : x
  2. Step 2: Convert to fraction form
    13,351.90/18,425.17 = 7,685.86/x
  3. Step 3: Cross multiply
    13,351.90x = 18,425.17 × 7,685.86
  4. Step 4: Simplify right side
    13,351.90x = 141,613,277.10
  5. Step 5: Solve for x
    x = 141,613,277.10/13,351.90
  6. Step 6: Final answer
    x = 10,606.23

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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.