Home / 21,427.60-32,129.88-6,630.16

Finding the Fourth Proportional to 21,427.60, 32,129.88 and 6,630.16

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Solution

The fourth proportional to 21,427.60, 32,129.88 and 6,630.16 is: 9,941.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,427.60 : 32,129.88 = 6,630.16 : x
  2. Step 2: Convert to fraction form
    21,427.60/32,129.88 = 6,630.16/x
  3. Step 3: Cross multiply
    21,427.60x = 32,129.88 × 6,630.16
  4. Step 4: Simplify right side
    21,427.60x = 213,026,245.18
  5. Step 5: Solve for x
    x = 213,026,245.18/21,427.60
  6. Step 6: Final answer
    x = 9,941.68

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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.