Home / 30,769.20-42,462.08-18,031.56

Finding the Fourth Proportional to 30,769.20, 42,462.08 and 18,031.56

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Solution

The fourth proportional to 30,769.20, 42,462.08 and 18,031.56 is: 24,883.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,769.20 : 42,462.08 = 18,031.56 : x
  2. Step 2: Convert to fraction form
    30,769.20/42,462.08 = 18,031.56/x
  3. Step 3: Cross multiply
    30,769.20x = 42,462.08 × 18,031.56
  4. Step 4: Simplify right side
    30,769.20x = 765,657,543.24
  5. Step 5: Solve for x
    x = 765,657,543.24/30,769.20
  6. Step 6: Final answer
    x = 24,883.90

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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.