Home / 15,045.24-20,763.60-8,331.49

Finding the Fourth Proportional to 15,045.24, 20,763.60 and 8,331.49

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Solution

The fourth proportional to 15,045.24, 20,763.60 and 8,331.49 is: 11,498.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,045.24 : 20,763.60 = 8,331.49 : x
  2. Step 2: Convert to fraction form
    15,045.24/20,763.60 = 8,331.49/x
  3. Step 3: Cross multiply
    15,045.24x = 20,763.60 × 8,331.49
  4. Step 4: Simplify right side
    15,045.24x = 172,991,720.48
  5. Step 5: Solve for x
    x = 172,991,720.48/15,045.24
  6. Step 6: Final answer
    x = 11,498.10

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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.