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Finding the Fourth Proportional to 21,751.70, 32,627.55 and 13,404.65

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Solution

The fourth proportional to 21,751.70, 32,627.55 and 13,404.65 is: 20,106.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,751.70 : 32,627.55 = 13,404.65 : x
  2. Step 2: Convert to fraction form
    21,751.70/32,627.55 = 13,404.65/x
  3. Step 3: Cross multiply
    21,751.70x = 32,627.55 × 13,404.65
  4. Step 4: Simplify right side
    21,751.70x = 437,360,888.11
  5. Step 5: Solve for x
    x = 437,360,888.11/21,751.70
  6. Step 6: Final answer
    x = 20,106.98

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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.