Home / 21,421.20-32,125.52-8,270.48

Finding the Fourth Proportional to 21,421.20, 32,125.52 and 8,270.48

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Solution

The fourth proportional to 21,421.20, 32,125.52 and 8,270.48 is: 12,403.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,421.20 : 32,125.52 = 8,270.48 : x
  2. Step 2: Convert to fraction form
    21,421.20/32,125.52 = 8,270.48/x
  3. Step 3: Cross multiply
    21,421.20x = 32,125.52 × 8,270.48
  4. Step 4: Simplify right side
    21,421.20x = 265,693,470.65
  5. Step 5: Solve for x
    x = 265,693,470.65/21,421.20
  6. Step 6: Final answer
    x = 12,403.30

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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.