Home / 28,451.94-42,643.35-20,134.40

Finding the Fourth Proportional to 28,451.94, 42,643.35 and 20,134.40

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Solution

The fourth proportional to 28,451.94, 42,643.35 and 20,134.40 is: 30,177.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,451.94 : 42,643.35 = 20,134.40 : x
  2. Step 2: Convert to fraction form
    28,451.94/42,643.35 = 20,134.40/x
  3. Step 3: Cross multiply
    28,451.94x = 42,643.35 × 20,134.40
  4. Step 4: Simplify right side
    28,451.94x = 858,598,053.02
  5. Step 5: Solve for x
    x = 858,598,053.02/28,451.94
  6. Step 6: Final answer
    x = 30,177.14

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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.