Home / 21,498.80-32,269.08-20,315.48

Finding the Fourth Proportional to 21,498.80, 32,269.08 and 20,315.48

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Solution

The fourth proportional to 21,498.80, 32,269.08 and 20,315.48 is: 30,492.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,498.80 : 32,269.08 = 20,315.48 : x
  2. Step 2: Convert to fraction form
    21,498.80/32,269.08 = 20,315.48/x
  3. Step 3: Cross multiply
    21,498.80x = 32,269.08 × 20,315.48
  4. Step 4: Simplify right side
    21,498.80x = 655,561,849.36
  5. Step 5: Solve for x
    x = 655,561,849.36/21,498.80
  6. Step 6: Final answer
    x = 30,492.95

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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.