Home / 30,151.88-45,008.20-27,928.42

Finding the Fourth Proportional to 30,151.88, 45,008.20 and 27,928.42

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Solution

The fourth proportional to 30,151.88, 45,008.20 and 27,928.42 is: 41,689.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,151.88 : 45,008.20 = 27,928.42 : x
  2. Step 2: Convert to fraction form
    30,151.88/45,008.20 = 27,928.42/x
  3. Step 3: Cross multiply
    30,151.88x = 45,008.20 × 27,928.42
  4. Step 4: Simplify right side
    30,151.88x = 1,257,007,913.04
  5. Step 5: Solve for x
    x = 1,257,007,913.04/30,151.88
  6. Step 6: Final answer
    x = 41,689.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.