Home / 40,030.27-55,242.20-21,881.54

Finding the Fourth Proportional to 40,030.27, 55,242.20 and 21,881.54

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Solution

The fourth proportional to 40,030.27, 55,242.20 and 21,881.54 is: 30,196.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,030.27 : 55,242.20 = 21,881.54 : x
  2. Step 2: Convert to fraction form
    40,030.27/55,242.20 = 21,881.54/x
  3. Step 3: Cross multiply
    40,030.27x = 55,242.20 × 21,881.54
  4. Step 4: Simplify right side
    40,030.27x = 1,208,784,601.80
  5. Step 5: Solve for x
    x = 1,208,784,601.80/40,030.27
  6. Step 6: Final answer
    x = 30,196.77

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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.