Home / 21,560.08-32,307.68-12,190

Finding the Fourth Proportional to 21,560.08, 32,307.68 and 12,190

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Solution

The fourth proportional to 21,560.08, 32,307.68 and 12,190 is: 18,266.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,560.08 : 32,307.68 = 12,190 : x
  2. Step 2: Convert to fraction form
    21,560.08/32,307.68 = 12,190/x
  3. Step 3: Cross multiply
    21,560.08x = 32,307.68 × 12,190
  4. Step 4: Simplify right side
    21,560.08x = 393,830,619.20
  5. Step 5: Solve for x
    x = 393,830,619.20/21,560.08
  6. Step 6: Final answer
    x = 18,266.66

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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.