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Finding the Fourth Proportional to 21,758.61, 30,024.84 and 12,327.18

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Solution

The fourth proportional to 21,758.61, 30,024.84 and 12,327.18 is: 17,010.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,758.61 : 30,024.84 = 12,327.18 : x
  2. Step 2: Convert to fraction form
    21,758.61/30,024.84 = 12,327.18/x
  3. Step 3: Cross multiply
    21,758.61x = 30,024.84 × 12,327.18
  4. Step 4: Simplify right side
    21,758.61x = 370,121,607.15
  5. Step 5: Solve for x
    x = 370,121,607.15/21,758.61
  6. Step 6: Final answer
    x = 17,010.35

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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.