Home / 13,156,910.76-18,155,615.13-7,649,894.92

Finding the Fourth Proportional to 13,156,910.76, 18,155,615.13 and 7,649,894.92

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Solution

The fourth proportional to 13,156,910.76, 18,155,615.13 and 7,649,894.92 is: 10,556,319.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,156,910.76 : 18,155,615.13 = 7,649,894.92 : x
  2. Step 2: Convert to fraction form
    13,156,910.76/18,155,615.13 = 7,649,894.92/x
  3. Step 3: Cross multiply
    13,156,910.76x = 18,155,615.13 × 7,649,894.92
  4. Step 4: Simplify right side
    13,156,910.76x = 138,888,547,926,351.48
  5. Step 5: Solve for x
    x = 138,888,547,926,351.48/13,156,910.76
  6. Step 6: Final answer
    x = 10,556,319.07

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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.