Home / 21,495.12-29,663.28-12,065.28

Finding the Fourth Proportional to 21,495.12, 29,663.28 and 12,065.28

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Solution

The fourth proportional to 21,495.12, 29,663.28 and 12,065.28 is: 16,650.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,495.12 : 29,663.28 = 12,065.28 : x
  2. Step 2: Convert to fraction form
    21,495.12/29,663.28 = 12,065.28/x
  3. Step 3: Cross multiply
    21,495.12x = 29,663.28 × 12,065.28
  4. Step 4: Simplify right side
    21,495.12x = 357,895,778.92
  5. Step 5: Solve for x
    x = 357,895,778.92/21,495.12
  6. Step 6: Final answer
    x = 16,650.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.