Home / 21,813.32-32,718.15-8,662.16

Finding the Fourth Proportional to 21,813.32, 32,718.15 and 8,662.16

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Solution

The fourth proportional to 21,813.32, 32,718.15 and 8,662.16 is: 12,992.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,813.32 : 32,718.15 = 8,662.16 : x
  2. Step 2: Convert to fraction form
    21,813.32/32,718.15 = 8,662.16/x
  3. Step 3: Cross multiply
    21,813.32x = 32,718.15 × 8,662.16
  4. Step 4: Simplify right side
    21,813.32x = 283,409,686.61
  5. Step 5: Solve for x
    x = 283,409,686.61/21,813.32
  6. Step 6: Final answer
    x = 12,992.51

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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.