Home / 21,212.01-29,246.86-18,335.55

Finding the Fourth Proportional to 21,212.01, 29,246.86 and 18,335.55

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Solution

The fourth proportional to 21,212.01, 29,246.86 and 18,335.55 is: 25,280.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,212.01 : 29,246.86 = 18,335.55 : x
  2. Step 2: Convert to fraction form
    21,212.01/29,246.86 = 18,335.55/x
  3. Step 3: Cross multiply
    21,212.01x = 29,246.86 × 18,335.55
  4. Step 4: Simplify right side
    21,212.01x = 536,257,263.87
  5. Step 5: Solve for x
    x = 536,257,263.87/21,212.01
  6. Step 6: Final answer
    x = 25,280.83

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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.