Home / 13,156,916.12-18,155,622.53-7,649,900.28

Finding the Fourth Proportional to 13,156,916.12, 18,155,622.53 and 7,649,900.28

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Solution

The fourth proportional to 13,156,916.12, 18,155,622.53 and 7,649,900.28 is: 10,556,326.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,156,916.12 : 18,155,622.53 = 7,649,900.28 : x
  2. Step 2: Convert to fraction form
    13,156,916.12/18,155,622.53 = 7,649,900.28/x
  3. Step 3: Cross multiply
    13,156,916.12x = 18,155,622.53 × 7,649,900.28
  4. Step 4: Simplify right side
    13,156,916.12x = 138,888,701,875,821.33
  5. Step 5: Solve for x
    x = 138,888,701,875,821.33/13,156,916.12
  6. Step 6: Final answer
    x = 10,556,326.47

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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.