Home / 21,459.84-32,191.44-8,311.20

Finding the Fourth Proportional to 21,459.84, 32,191.44 and 8,311.20

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Solution

The fourth proportional to 21,459.84, 32,191.44 and 8,311.20 is: 12,467.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,459.84 : 32,191.44 = 8,311.20 : x
  2. Step 2: Convert to fraction form
    21,459.84/32,191.44 = 8,311.20/x
  3. Step 3: Cross multiply
    21,459.84x = 32,191.44 × 8,311.20
  4. Step 4: Simplify right side
    21,459.84x = 267,549,496.13
  5. Step 5: Solve for x
    x = 267,549,496.13/21,459.84
  6. Step 6: Final answer
    x = 12,467.45

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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.