Home / 39,881.64-55,034.19-21,975.66

Finding the Fourth Proportional to 39,881.64, 55,034.19 and 21,975.66

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Solution

The fourth proportional to 39,881.64, 55,034.19 and 21,975.66 is: 30,325.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,881.64 : 55,034.19 = 21,975.66 : x
  2. Step 2: Convert to fraction form
    39,881.64/55,034.19 = 21,975.66/x
  3. Step 3: Cross multiply
    39,881.64x = 55,034.19 × 21,975.66
  4. Step 4: Simplify right side
    39,881.64x = 1,209,412,647.82
  5. Step 5: Solve for x
    x = 1,209,412,647.82/39,881.64
  6. Step 6: Final answer
    x = 30,325.05

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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.