Home / 20,281.90-30,424.74-5,490.94

Finding the Fourth Proportional to 20,281.90, 30,424.74 and 5,490.94

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Solution

The fourth proportional to 20,281.90, 30,424.74 and 5,490.94 is: 8,236.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,281.90 : 30,424.74 = 5,490.94 : x
  2. Step 2: Convert to fraction form
    20,281.90/30,424.74 = 5,490.94/x
  3. Step 3: Cross multiply
    20,281.90x = 30,424.74 × 5,490.94
  4. Step 4: Simplify right side
    20,281.90x = 167,060,421.86
  5. Step 5: Solve for x
    x = 167,060,421.86/20,281.90
  6. Step 6: Final answer
    x = 8,236.92

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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.