Home / 13,935.71-19,231.65-7,885.50

Finding the Fourth Proportional to 13,935.71, 19,231.65 and 7,885.50

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Solution

The fourth proportional to 13,935.71, 19,231.65 and 7,885.50 is: 10,882.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,935.71 : 19,231.65 = 7,885.50 : x
  2. Step 2: Convert to fraction form
    13,935.71/19,231.65 = 7,885.50/x
  3. Step 3: Cross multiply
    13,935.71x = 19,231.65 × 7,885.50
  4. Step 4: Simplify right side
    13,935.71x = 151,651,176.08
  5. Step 5: Solve for x
    x = 151,651,176.08/13,935.71
  6. Step 6: Final answer
    x = 10,882.20

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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.