Home / 19,281.36-28,921.84-9,924

Finding the Fourth Proportional to 19,281.36, 28,921.84 and 9,924

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Solution

The fourth proportional to 19,281.36, 28,921.84 and 9,924 is: 14,885.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,281.36 : 28,921.84 = 9,924 : x
  2. Step 2: Convert to fraction form
    19,281.36/28,921.84 = 9,924/x
  3. Step 3: Cross multiply
    19,281.36x = 28,921.84 × 9,924
  4. Step 4: Simplify right side
    19,281.36x = 287,020,340.16
  5. Step 5: Solve for x
    x = 287,020,340.16/19,281.36
  6. Step 6: Final answer
    x = 14,885.90

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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.