Home / 40,105.04-55,345.08-21,708.14

Finding the Fourth Proportional to 40,105.04, 55,345.08 and 21,708.14

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Solution

The fourth proportional to 40,105.04, 55,345.08 and 21,708.14 is: 29,957.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,105.04 : 55,345.08 = 21,708.14 : x
  2. Step 2: Convert to fraction form
    40,105.04/55,345.08 = 21,708.14/x
  3. Step 3: Cross multiply
    40,105.04x = 55,345.08 × 21,708.14
  4. Step 4: Simplify right side
    40,105.04x = 1,201,438,744.95
  5. Step 5: Solve for x
    x = 1,201,438,744.95/40,105.04
  6. Step 6: Final answer
    x = 29,957.30

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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.