Home / 28,079.24-38,749.22-15,503.90

Finding the Fourth Proportional to 28,079.24, 38,749.22 and 15,503.90

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Solution

The fourth proportional to 28,079.24, 38,749.22 and 15,503.90 is: 21,395.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,079.24 : 38,749.22 = 15,503.90 : x
  2. Step 2: Convert to fraction form
    28,079.24/38,749.22 = 15,503.90/x
  3. Step 3: Cross multiply
    28,079.24x = 38,749.22 × 15,503.90
  4. Step 4: Simplify right side
    28,079.24x = 600,764,031.96
  5. Step 5: Solve for x
    x = 600,764,031.96/28,079.24
  6. Step 6: Final answer
    x = 21,395.31

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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.