Home / 20,785,156.06-28,682,921.91-11,492,565.72

Finding the Fourth Proportional to 20,785,156.06, 28,682,921.91 and 11,492,565.72

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Solution

The fourth proportional to 20,785,156.06, 28,682,921.91 and 11,492,565.72 is: 15,859,412.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,785,156.06 : 28,682,921.91 = 11,492,565.72 : x
  2. Step 2: Convert to fraction form
    20,785,156.06/28,682,921.91 = 11,492,565.72/x
  3. Step 3: Cross multiply
    20,785,156.06x = 28,682,921.91 × 11,492,565.72
  4. Step 4: Simplify right side
    20,785,156.06x = 329,640,364,948,888.31
  5. Step 5: Solve for x
    x = 329,640,364,948,888.31/20,785,156.06
  6. Step 6: Final answer
    x = 15,859,412.56

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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.