Home / 38,660,421.89-53,349,947.38-21,255,731.57

Finding the Fourth Proportional to 38,660,421.89, 53,349,947.38 and 21,255,731.57

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Solution

The fourth proportional to 38,660,421.89, 53,349,947.38 and 21,255,731.57 is: 29,332,120.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,660,421.89 : 53,349,947.38 = 21,255,731.57 : x
  2. Step 2: Convert to fraction form
    38,660,421.89/53,349,947.38 = 21,255,731.57/x
  3. Step 3: Cross multiply
    38,660,421.89x = 53,349,947.38 × 21,255,731.57
  4. Step 4: Simplify right side
    38,660,421.89x = 1,133,992,160,782,904.75
  5. Step 5: Solve for x
    x = 1,133,992,160,782,904.75/38,660,421.89
  6. Step 6: Final answer
    x = 29,332,120.69

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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.