Home / 21,243.20-29,288.52-13,282.52

Finding the Fourth Proportional to 21,243.20, 29,288.52 and 13,282.52

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Solution

The fourth proportional to 21,243.20, 29,288.52 and 13,282.52 is: 18,312.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,243.20 : 29,288.52 = 13,282.52 : x
  2. Step 2: Convert to fraction form
    21,243.20/29,288.52 = 13,282.52/x
  3. Step 3: Cross multiply
    21,243.20x = 29,288.52 × 13,282.52
  4. Step 4: Simplify right side
    21,243.20x = 389,025,206.23
  5. Step 5: Solve for x
    x = 389,025,206.23/21,243.20
  6. Step 6: Final answer
    x = 18,312.93

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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.