Home / 13,805.13-20,711.34-7,948.83

Finding the Fourth Proportional to 13,805.13, 20,711.34 and 7,948.83

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Solution

The fourth proportional to 13,805.13, 20,711.34 and 7,948.83 is: 11,925.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,805.13 : 20,711.34 = 7,948.83 : x
  2. Step 2: Convert to fraction form
    13,805.13/20,711.34 = 7,948.83/x
  3. Step 3: Cross multiply
    13,805.13x = 20,711.34 × 7,948.83
  4. Step 4: Simplify right side
    13,805.13x = 164,630,920.73
  5. Step 5: Solve for x
    x = 164,630,920.73/13,805.13
  6. Step 6: Final answer
    x = 11,925.34

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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.