Home / 13,112.51-19,656.87-6,540.71

Finding the Fourth Proportional to 13,112.51, 19,656.87 and 6,540.71

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Solution

The fourth proportional to 13,112.51, 19,656.87 and 6,540.71 is: 9,805.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,112.51 : 19,656.87 = 6,540.71 : x
  2. Step 2: Convert to fraction form
    13,112.51/19,656.87 = 6,540.71/x
  3. Step 3: Cross multiply
    13,112.51x = 19,656.87 × 6,540.71
  4. Step 4: Simplify right side
    13,112.51x = 128,569,886.18
  5. Step 5: Solve for x
    x = 128,569,886.18/13,112.51
  6. Step 6: Final answer
    x = 9,805.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.