Home / 19,040.40-28,560.64-10,279.44

Finding the Fourth Proportional to 19,040.40, 28,560.64 and 10,279.44

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Solution

The fourth proportional to 19,040.40, 28,560.64 and 10,279.44 is: 15,419.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,040.40 : 28,560.64 = 10,279.44 : x
  2. Step 2: Convert to fraction form
    19,040.40/28,560.64 = 10,279.44/x
  3. Step 3: Cross multiply
    19,040.40x = 28,560.64 × 10,279.44
  4. Step 4: Simplify right side
    19,040.40x = 293,587,385.24
  5. Step 5: Solve for x
    x = 293,587,385.24/19,040.40
  6. Step 6: Final answer
    x = 15,419.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.