Home / 13,061,916.89-18,025,660.37-7,181,799.65

Finding the Fourth Proportional to 13,061,916.89, 18,025,660.37 and 7,181,799.65

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Solution

The fourth proportional to 13,061,916.89, 18,025,660.37 and 7,181,799.65 is: 9,911,001.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,061,916.89 : 18,025,660.37 = 7,181,799.65 : x
  2. Step 2: Convert to fraction form
    13,061,916.89/18,025,660.37 = 7,181,799.65/x
  3. Step 3: Cross multiply
    13,061,916.89x = 18,025,660.37 × 7,181,799.65
  4. Step 4: Simplify right side
    13,061,916.89x = 129,456,681,264,111.05
  5. Step 5: Solve for x
    x = 129,456,681,264,111.05/13,061,916.89
  6. Step 6: Final answer
    x = 9,911,001.76

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1.5x scale

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.