Home / 15,200.36-20,979.98-8,914.76

Finding the Fourth Proportional to 15,200.36, 20,979.98 and 8,914.76

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Solution

The fourth proportional to 15,200.36, 20,979.98 and 8,914.76 is: 12,304.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,200.36 : 20,979.98 = 8,914.76 : x
  2. Step 2: Convert to fraction form
    15,200.36/20,979.98 = 8,914.76/x
  3. Step 3: Cross multiply
    15,200.36x = 20,979.98 × 8,914.76
  4. Step 4: Simplify right side
    15,200.36x = 187,031,337.03
  5. Step 5: Solve for x
    x = 187,031,337.03/15,200.36
  6. Step 6: Final answer
    x = 12,304.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.