Home / 28,293.95-42,400.68-20,839.79

Finding the Fourth Proportional to 28,293.95, 42,400.68 and 20,839.79

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Solution

The fourth proportional to 28,293.95, 42,400.68 and 20,839.79 is: 31,230.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,293.95 : 42,400.68 = 20,839.79 : x
  2. Step 2: Convert to fraction form
    28,293.95/42,400.68 = 20,839.79/x
  3. Step 3: Cross multiply
    28,293.95x = 42,400.68 × 20,839.79
  4. Step 4: Simplify right side
    28,293.95x = 883,621,055.05
  5. Step 5: Solve for x
    x = 883,621,055.05/28,293.95
  6. Step 6: Final answer
    x = 31,230.04

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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.