Home / 21,280.59-29,365.34-12,325.23

Finding the Fourth Proportional to 21,280.59, 29,365.34 and 12,325.23

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Solution

The fourth proportional to 21,280.59, 29,365.34 and 12,325.23 is: 17,007.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,280.59 : 29,365.34 = 12,325.23 : x
  2. Step 2: Convert to fraction form
    21,280.59/29,365.34 = 12,325.23/x
  3. Step 3: Cross multiply
    21,280.59x = 29,365.34 × 12,325.23
  4. Step 4: Simplify right side
    21,280.59x = 361,934,507.90
  5. Step 5: Solve for x
    x = 361,934,507.90/21,280.59
  6. Step 6: Final answer
    x = 17,007.73

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1.5x scale

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.