Home / 38,121.28-52,606.72-21,125.40

Finding the Fourth Proportional to 38,121.28, 52,606.72 and 21,125.40

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Solution

The fourth proportional to 38,121.28, 52,606.72 and 21,125.40 is: 29,152.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,121.28 : 52,606.72 = 21,125.40 : x
  2. Step 2: Convert to fraction form
    38,121.28/52,606.72 = 21,125.40/x
  3. Step 3: Cross multiply
    38,121.28x = 52,606.72 × 21,125.40
  4. Step 4: Simplify right side
    38,121.28x = 1,111,338,002.69
  5. Step 5: Solve for x
    x = 1,111,338,002.69/38,121.28
  6. Step 6: Final answer
    x = 29,152.69

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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.