Home / 15,139.44-20,890.98-11,162.70

Finding the Fourth Proportional to 15,139.44, 20,890.98 and 11,162.70

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Solution

The fourth proportional to 15,139.44, 20,890.98 and 11,162.70 is: 15,403.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,139.44 : 20,890.98 = 11,162.70 : x
  2. Step 2: Convert to fraction form
    15,139.44/20,890.98 = 11,162.70/x
  3. Step 3: Cross multiply
    15,139.44x = 20,890.98 × 11,162.70
  4. Step 4: Simplify right side
    15,139.44x = 233,199,742.45
  5. Step 5: Solve for x
    x = 233,199,742.45/15,139.44
  6. Step 6: Final answer
    x = 15,403.46

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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.