Home / 28,981,291.08-40,029,258.06-21,128,367

Finding the Fourth Proportional to 28,981,291.08, 40,029,258.06 and 21,128,367

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Solution

The fourth proportional to 28,981,291.08, 40,029,258.06 and 21,128,367 is: 29,182,718.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,981,291.08 : 40,029,258.06 = 21,128,367 : x
  2. Step 2: Convert to fraction form
    28,981,291.08/40,029,258.06 = 21,128,367/x
  3. Step 3: Cross multiply
    28,981,291.08x = 40,029,258.06 × 21,128,367
  4. Step 4: Simplify right side
    28,981,291.08x = 845,752,855,029,388.12
  5. Step 5: Solve for x
    x = 845,752,855,029,388.12/28,981,291.08
  6. Step 6: Final answer
    x = 29,182,718.35

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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.