Home / 40,104.12-55,345.14-21,956.10

Finding the Fourth Proportional to 40,104.12, 55,345.14 and 21,956.10

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Solution

The fourth proportional to 40,104.12, 55,345.14 and 21,956.10 is: 30,300.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,104.12 : 55,345.14 = 21,956.10 : x
  2. Step 2: Convert to fraction form
    40,104.12/55,345.14 = 21,956.10/x
  3. Step 3: Cross multiply
    40,104.12x = 55,345.14 × 21,956.10
  4. Step 4: Simplify right side
    40,104.12x = 1,215,163,428.35
  5. Step 5: Solve for x
    x = 1,215,163,428.35/40,104.12
  6. Step 6: Final answer
    x = 30,300.21

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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.