Home / 21,817.96-30,110.34-12,387.13

Finding the Fourth Proportional to 21,817.96, 30,110.34 and 12,387.13

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Solution

The fourth proportional to 21,817.96, 30,110.34 and 12,387.13 is: 17,095.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,817.96 : 30,110.34 = 12,387.13 : x
  2. Step 2: Convert to fraction form
    21,817.96/30,110.34 = 12,387.13/x
  3. Step 3: Cross multiply
    21,817.96x = 30,110.34 × 12,387.13
  4. Step 4: Simplify right side
    21,817.96x = 372,980,695.92
  5. Step 5: Solve for x
    x = 372,980,695.92/21,817.96
  6. Step 6: Final answer
    x = 17,095.12

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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.