Home / 21,223.59-29,264.40-13,556.55

Finding the Fourth Proportional to 21,223.59, 29,264.40 and 13,556.55

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Solution

The fourth proportional to 21,223.59, 29,264.40 and 13,556.55 is: 18,692.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,223.59 : 29,264.40 = 13,556.55 : x
  2. Step 2: Convert to fraction form
    21,223.59/29,264.40 = 13,556.55/x
  3. Step 3: Cross multiply
    21,223.59x = 29,264.40 × 13,556.55
  4. Step 4: Simplify right side
    21,223.59x = 396,724,301.82
  5. Step 5: Solve for x
    x = 396,724,301.82/21,223.59
  6. Step 6: Final answer
    x = 18,692.61

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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.