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Finding the Fourth Proportional to 21,875.32, 32,816.20 and 7,079.32

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Solution

The fourth proportional to 21,875.32, 32,816.20 and 7,079.32 is: 10,620.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,875.32 : 32,816.20 = 7,079.32 : x
  2. Step 2: Convert to fraction form
    21,875.32/32,816.20 = 7,079.32/x
  3. Step 3: Cross multiply
    21,875.32x = 32,816.20 × 7,079.32
  4. Step 4: Simplify right side
    21,875.32x = 232,316,380.98
  5. Step 5: Solve for x
    x = 232,316,380.98/21,875.32
  6. Step 6: Final answer
    x = 10,620.02

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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.