Home / 13,161.17-19,830.56-10,872.45

Finding the Fourth Proportional to 13,161.17, 19,830.56 and 10,872.45

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Solution

The fourth proportional to 13,161.17, 19,830.56 and 10,872.45 is: 16,382.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,161.17 : 19,830.56 = 10,872.45 : x
  2. Step 2: Convert to fraction form
    13,161.17/19,830.56 = 10,872.45/x
  3. Step 3: Cross multiply
    13,161.17x = 19,830.56 × 10,872.45
  4. Step 4: Simplify right side
    13,161.17x = 215,606,717.71
  5. Step 5: Solve for x
    x = 215,606,717.71/13,161.17
  6. Step 6: Final answer
    x = 16,382.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.