Home / 18,801.32-28,211.16-13,290.08

Finding the Fourth Proportional to 18,801.32, 28,211.16 and 13,290.08

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Solution

The fourth proportional to 18,801.32, 28,211.16 and 13,290.08 is: 19,941.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,801.32 : 28,211.16 = 13,290.08 : x
  2. Step 2: Convert to fraction form
    18,801.32/28,211.16 = 13,290.08/x
  3. Step 3: Cross multiply
    18,801.32x = 28,211.16 × 13,290.08
  4. Step 4: Simplify right side
    18,801.32x = 374,928,432.24
  5. Step 5: Solve for x
    x = 374,928,432.24/18,801.32
  6. Step 6: Final answer
    x = 19,941.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.