Home / 22,920.80-34,352.49-12,390.44

Finding the Fourth Proportional to 22,920.80, 34,352.49 and 12,390.44

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Solution

The fourth proportional to 22,920.80, 34,352.49 and 12,390.44 is: 18,570.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,920.80 : 34,352.49 = 12,390.44 : x
  2. Step 2: Convert to fraction form
    22,920.80/34,352.49 = 12,390.44/x
  3. Step 3: Cross multiply
    22,920.80x = 34,352.49 × 12,390.44
  4. Step 4: Simplify right side
    22,920.80x = 425,642,466.20
  5. Step 5: Solve for x
    x = 425,642,466.20/22,920.80
  6. Step 6: Final answer
    x = 18,570.14

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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.