Home / 15,424.27-21,290.70-9,374.49

Finding the Fourth Proportional to 15,424.27, 21,290.70 and 9,374.49

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Solution

The fourth proportional to 15,424.27, 21,290.70 and 9,374.49 is: 12,939.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,424.27 : 21,290.70 = 9,374.49 : x
  2. Step 2: Convert to fraction form
    15,424.27/21,290.70 = 9,374.49/x
  3. Step 3: Cross multiply
    15,424.27x = 21,290.70 × 9,374.49
  4. Step 4: Simplify right side
    15,424.27x = 199,589,454.24
  5. Step 5: Solve for x
    x = 199,589,454.24/15,424.27
  6. Step 6: Final answer
    x = 12,939.96

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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.