Home / 28,498.57-42,756.50-20,194.65

Finding the Fourth Proportional to 28,498.57, 42,756.50 and 20,194.65

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Solution

The fourth proportional to 28,498.57, 42,756.50 and 20,194.65 is: 30,298.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,498.57 : 42,756.50 = 20,194.65 : x
  2. Step 2: Convert to fraction form
    28,498.57/42,756.50 = 20,194.65/x
  3. Step 3: Cross multiply
    28,498.57x = 42,756.50 × 20,194.65
  4. Step 4: Simplify right side
    28,498.57x = 863,452,603.21
  5. Step 5: Solve for x
    x = 863,452,603.21/28,498.57
  6. Step 6: Final answer
    x = 30,298.11

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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.