Home / 20,155.06-30,215.20-8,901.82

Finding the Fourth Proportional to 20,155.06, 30,215.20 and 8,901.82

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Solution

The fourth proportional to 20,155.06, 30,215.20 and 8,901.82 is: 13,345.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155.06 : 30,215.20 = 8,901.82 : x
  2. Step 2: Convert to fraction form
    20,155.06/30,215.20 = 8,901.82/x
  3. Step 3: Cross multiply
    20,155.06x = 30,215.20 × 8,901.82
  4. Step 4: Simplify right side
    20,155.06x = 268,970,271.66
  5. Step 5: Solve for x
    x = 268,970,271.66/20,155.06
  6. Step 6: Final answer
    x = 13,345.05

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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.