Home / 30,982.68-42,756.84-18,407.52

Finding the Fourth Proportional to 30,982.68, 42,756.84 and 18,407.52

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Solution

The fourth proportional to 30,982.68, 42,756.84 and 18,407.52 is: 25,402.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,982.68 : 42,756.84 = 18,407.52 : x
  2. Step 2: Convert to fraction form
    30,982.68/42,756.84 = 18,407.52/x
  3. Step 3: Cross multiply
    30,982.68x = 42,756.84 × 18,407.52
  4. Step 4: Simplify right side
    30,982.68x = 787,047,387.44
  5. Step 5: Solve for x
    x = 787,047,387.44/30,982.68
  6. Step 6: Final answer
    x = 25,402.82

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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.