Home / 15,117.40-22,679.70-7,319.80

Finding the Fourth Proportional to 15,117.40, 22,679.70 and 7,319.80

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Solution

The fourth proportional to 15,117.40, 22,679.70 and 7,319.80 is: 10,981.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,117.40 : 22,679.70 = 7,319.80 : x
  2. Step 2: Convert to fraction form
    15,117.40/22,679.70 = 7,319.80/x
  3. Step 3: Cross multiply
    15,117.40x = 22,679.70 × 7,319.80
  4. Step 4: Simplify right side
    15,117.40x = 166,010,868.06
  5. Step 5: Solve for x
    x = 166,010,868.06/15,117.40
  6. Step 6: Final answer
    x = 10,981.44

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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.