Home / 21,501.36-29,671.76-12,069.92

Finding the Fourth Proportional to 21,501.36, 29,671.76 and 12,069.92

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Solution

The fourth proportional to 21,501.36, 29,671.76 and 12,069.92 is: 16,656.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,501.36 : 29,671.76 = 12,069.92 : x
  2. Step 2: Convert to fraction form
    21,501.36/29,671.76 = 12,069.92/x
  3. Step 3: Cross multiply
    21,501.36x = 29,671.76 × 12,069.92
  4. Step 4: Simplify right side
    21,501.36x = 358,135,769.46
  5. Step 5: Solve for x
    x = 358,135,769.46/21,501.36
  6. Step 6: Final answer
    x = 16,656.42

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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.