Home / 20,713.20-31,069.80-19,510.35

Finding the Fourth Proportional to 20,713.20, 31,069.80 and 19,510.35

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Solution

The fourth proportional to 20,713.20, 31,069.80 and 19,510.35 is: 29,265.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,713.20 : 31,069.80 = 19,510.35 : x
  2. Step 2: Convert to fraction form
    20,713.20/31,069.80 = 19,510.35/x
  3. Step 3: Cross multiply
    20,713.20x = 31,069.80 × 19,510.35
  4. Step 4: Simplify right side
    20,713.20x = 606,182,672.43
  5. Step 5: Solve for x
    x = 606,182,672.43/20,713.20
  6. Step 6: Final answer
    x = 29,265.53

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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.