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Finding the Fourth Proportional to 21,751.52, 32,626.16 and 12,750.63

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Solution

The fourth proportional to 21,751.52, 32,626.16 and 12,750.63 is: 19,125.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,751.52 : 32,626.16 = 12,750.63 : x
  2. Step 2: Convert to fraction form
    21,751.52/32,626.16 = 12,750.63/x
  3. Step 3: Cross multiply
    21,751.52x = 32,626.16 × 12,750.63
  4. Step 4: Simplify right side
    21,751.52x = 416,004,094.48
  5. Step 5: Solve for x
    x = 416,004,094.48/21,751.52
  6. Step 6: Final answer
    x = 19,125.29

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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.