Home / 14,142.60-21,230.10-8,602.20

Finding the Fourth Proportional to 14,142.60, 21,230.10 and 8,602.20

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Solution

The fourth proportional to 14,142.60, 21,230.10 and 8,602.20 is: 12,913.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,142.60 : 21,230.10 = 8,602.20 : x
  2. Step 2: Convert to fraction form
    14,142.60/21,230.10 = 8,602.20/x
  3. Step 3: Cross multiply
    14,142.60x = 21,230.10 × 8,602.20
  4. Step 4: Simplify right side
    14,142.60x = 182,625,566.22
  5. Step 5: Solve for x
    x = 182,625,566.22/14,142.60
  6. Step 6: Final answer
    x = 12,913.15

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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.