Home / 19,275.36-28,912.89-9,918

Finding the Fourth Proportional to 19,275.36, 28,912.89 and 9,918

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Solution

The fourth proportional to 19,275.36, 28,912.89 and 9,918 is: 14,876.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,275.36 : 28,912.89 = 9,918 : x
  2. Step 2: Convert to fraction form
    19,275.36/28,912.89 = 9,918/x
  3. Step 3: Cross multiply
    19,275.36x = 28,912.89 × 9,918
  4. Step 4: Simplify right side
    19,275.36x = 286,758,043.02
  5. Step 5: Solve for x
    x = 286,758,043.02/19,275.36
  6. Step 6: Final answer
    x = 14,876.92

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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.