Home / 20,329,878.18-28,055,633.14-11,162,440.74

Finding the Fourth Proportional to 20,329,878.18, 28,055,633.14 and 11,162,440.74

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Solution

The fourth proportional to 20,329,878.18, 28,055,633.14 and 11,162,440.74 is: 15,404,388.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,329,878.18 : 28,055,633.14 = 11,162,440.74 : x
  2. Step 2: Convert to fraction form
    20,329,878.18/28,055,633.14 = 11,162,440.74/x
  3. Step 3: Cross multiply
    20,329,878.18x = 28,055,633.14 × 11,162,440.74
  4. Step 4: Simplify right side
    20,329,878.18x = 313,169,342,348,430.12
  5. Step 5: Solve for x
    x = 313,169,342,348,430.12/20,329,878.18
  6. Step 6: Final answer
    x = 15,404,388.53

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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.