Home / 15,438,789.66-21,291,582.87-9,638,105.34

Finding the Fourth Proportional to 15,438,789.66, 21,291,582.87 and 9,638,105.34

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Solution

The fourth proportional to 15,438,789.66, 21,291,582.87 and 9,638,105.34 is: 13,291,878.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,438,789.66 : 21,291,582.87 = 9,638,105.34 : x
  2. Step 2: Convert to fraction form
    15,438,789.66/21,291,582.87 = 9,638,105.34/x
  3. Step 3: Cross multiply
    15,438,789.66x = 21,291,582.87 × 9,638,105.34
  4. Step 4: Simplify right side
    15,438,789.66x = 205,210,518,556,399.53
  5. Step 5: Solve for x
    x = 205,210,518,556,399.53/15,438,789.66
  6. Step 6: Final answer
    x = 13,291,878.64

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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.