Home / 13,498.40-20,216.28-13,031.18

Finding the Fourth Proportional to 13,498.40, 20,216.28 and 13,031.18

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Solution

The fourth proportional to 13,498.40, 20,216.28 and 13,031.18 is: 19,516.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,498.40 : 20,216.28 = 13,031.18 : x
  2. Step 2: Convert to fraction form
    13,498.40/20,216.28 = 13,031.18/x
  3. Step 3: Cross multiply
    13,498.40x = 20,216.28 × 13,031.18
  4. Step 4: Simplify right side
    13,498.40x = 263,441,983.61
  5. Step 5: Solve for x
    x = 263,441,983.61/13,498.40
  6. Step 6: Final answer
    x = 19,516.53

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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.