Home / 20,278.10-30,417.22-6,237.86

Finding the Fourth Proportional to 20,278.10, 30,417.22 and 6,237.86

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Solution

The fourth proportional to 20,278.10, 30,417.22 and 6,237.86 is: 9,356.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,278.10 : 30,417.22 = 6,237.86 : x
  2. Step 2: Convert to fraction form
    20,278.10/30,417.22 = 6,237.86/x
  3. Step 3: Cross multiply
    20,278.10x = 30,417.22 × 6,237.86
  4. Step 4: Simplify right side
    20,278.10x = 189,738,386.76
  5. Step 5: Solve for x
    x = 189,738,386.76/20,278.10
  6. Step 6: Final answer
    x = 9,356.81

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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.