Home / 21,931.95-32,879.43-8,777.15

Finding the Fourth Proportional to 21,931.95, 32,879.43 and 8,777.15

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Solution

The fourth proportional to 21,931.95, 32,879.43 and 8,777.15 is: 13,158.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,931.95 : 32,879.43 = 8,777.15 : x
  2. Step 2: Convert to fraction form
    21,931.95/32,879.43 = 8,777.15/x
  3. Step 3: Cross multiply
    21,931.95x = 32,879.43 × 8,777.15
  4. Step 4: Simplify right side
    21,931.95x = 288,587,689.02
  5. Step 5: Solve for x
    x = 288,587,689.02/21,931.95
  6. Step 6: Final answer
    x = 13,158.32

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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.