Home / 25,139.62-34,659.66-20,894.32

Finding the Fourth Proportional to 25,139.62, 34,659.66 and 20,894.32

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Solution

The fourth proportional to 25,139.62, 34,659.66 and 20,894.32 is: 28,806.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,139.62 : 34,659.66 = 20,894.32 : x
  2. Step 2: Convert to fraction form
    25,139.62/34,659.66 = 20,894.32/x
  3. Step 3: Cross multiply
    25,139.62x = 34,659.66 × 20,894.32
  4. Step 4: Simplify right side
    25,139.62x = 724,190,027.13
  5. Step 5: Solve for x
    x = 724,190,027.13/25,139.62
  6. Step 6: Final answer
    x = 28,806.72

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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.