Home / 21,422.52-32,129.46-8,276.76

Finding the Fourth Proportional to 21,422.52, 32,129.46 and 8,276.76

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Solution

The fourth proportional to 21,422.52, 32,129.46 and 8,276.76 is: 12,413.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,422.52 : 32,129.46 = 8,276.76 : x
  2. Step 2: Convert to fraction form
    21,422.52/32,129.46 = 8,276.76/x
  3. Step 3: Cross multiply
    21,422.52x = 32,129.46 × 8,276.76
  4. Step 4: Simplify right side
    21,422.52x = 265,927,829.35
  5. Step 5: Solve for x
    x = 265,927,829.35/21,422.52
  6. Step 6: Final answer
    x = 12,413.47

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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.