Home / 15,679.70-21,637.19-9,306.56

Finding the Fourth Proportional to 15,679.70, 21,637.19 and 9,306.56

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Solution

The fourth proportional to 15,679.70, 21,637.19 and 9,306.56 is: 12,842.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,679.70 : 21,637.19 = 9,306.56 : x
  2. Step 2: Convert to fraction form
    15,679.70/21,637.19 = 9,306.56/x
  3. Step 3: Cross multiply
    15,679.70x = 21,637.19 × 9,306.56
  4. Step 4: Simplify right side
    15,679.70x = 201,367,652.25
  5. Step 5: Solve for x
    x = 201,367,652.25/15,679.70
  6. Step 6: Final answer
    x = 12,842.57

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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.