Home / 21,420.88-32,126.14-8,264.86

Finding the Fourth Proportional to 21,420.88, 32,126.14 and 8,264.86

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Solution

The fourth proportional to 21,420.88, 32,126.14 and 8,264.86 is: 12,395.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,420.88 : 32,126.14 = 8,264.86 : x
  2. Step 2: Convert to fraction form
    21,420.88/32,126.14 = 8,264.86/x
  3. Step 3: Cross multiply
    21,420.88x = 32,126.14 × 8,264.86
  4. Step 4: Simplify right side
    21,420.88x = 265,518,049.44
  5. Step 5: Solve for x
    x = 265,518,049.44/21,420.88
  6. Step 6: Final answer
    x = 12,395.29

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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.