Home / 12,920.33-19,355.85-8,753.20

Finding the Fourth Proportional to 12,920.33, 19,355.85 and 8,753.20

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Solution

The fourth proportional to 12,920.33, 19,355.85 and 8,753.20 is: 13,113.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,920.33 : 19,355.85 = 8,753.20 : x
  2. Step 2: Convert to fraction form
    12,920.33/19,355.85 = 8,753.20/x
  3. Step 3: Cross multiply
    12,920.33x = 19,355.85 × 8,753.20
  4. Step 4: Simplify right side
    12,920.33x = 169,425,577.83
  5. Step 5: Solve for x
    x = 169,425,577.83/12,920.33
  6. Step 6: Final answer
    x = 13,113.10

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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.