Home / 30,125.28-45,132.50-18,878.53

Finding the Fourth Proportional to 30,125.28, 45,132.50 and 18,878.53

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Solution

The fourth proportional to 30,125.28, 45,132.50 and 18,878.53 is: 28,283.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,125.28 : 45,132.50 = 18,878.53 : x
  2. Step 2: Convert to fraction form
    30,125.28/45,132.50 = 18,878.53/x
  3. Step 3: Cross multiply
    30,125.28x = 45,132.50 × 18,878.53
  4. Step 4: Simplify right side
    30,125.28x = 852,034,935.17
  5. Step 5: Solve for x
    x = 852,034,935.17/30,125.28
  6. Step 6: Final answer
    x = 28,283.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.