Home / 38,121.91-52,608.37-21,126.45

Finding the Fourth Proportional to 38,121.91, 52,608.37 and 21,126.45

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Solution

The fourth proportional to 38,121.91, 52,608.37 and 21,126.45 is: 29,154.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,121.91 : 52,608.37 = 21,126.45 : x
  2. Step 2: Convert to fraction form
    38,121.91/52,608.37 = 21,126.45/x
  3. Step 3: Cross multiply
    38,121.91x = 52,608.37 × 21,126.45
  4. Step 4: Simplify right side
    38,121.91x = 1,111,427,927.71
  5. Step 5: Solve for x
    x = 1,111,427,927.71/38,121.91
  6. Step 6: Final answer
    x = 29,154.57

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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.