Home / 13,156,911.51-18,155,616.17-7,649,895.67

Finding the Fourth Proportional to 13,156,911.51, 18,155,616.17 and 7,649,895.67

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Solution

The fourth proportional to 13,156,911.51, 18,155,616.17 and 7,649,895.67 is: 10,556,320.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,156,911.51 : 18,155,616.17 = 7,649,895.67 : x
  2. Step 2: Convert to fraction form
    13,156,911.51/18,155,616.17 = 7,649,895.67/x
  3. Step 3: Cross multiply
    13,156,911.51x = 18,155,616.17 × 7,649,895.67
  4. Step 4: Simplify right side
    13,156,911.51x = 138,888,569,441,426.47
  5. Step 5: Solve for x
    x = 138,888,569,441,426.47/13,156,911.51
  6. Step 6: Final answer
    x = 10,556,320.10

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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.