Home / 10,787.81-16,159.85-5,582.75

Finding the Fourth Proportional to 10,787.81, 16,159.85 and 5,582.75

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Solution

The fourth proportional to 10,787.81, 16,159.85 and 5,582.75 is: 8,362.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,787.81 : 16,159.85 = 5,582.75 : x
  2. Step 2: Convert to fraction form
    10,787.81/16,159.85 = 5,582.75/x
  3. Step 3: Cross multiply
    10,787.81x = 16,159.85 × 5,582.75
  4. Step 4: Simplify right side
    10,787.81x = 90,216,374.67
  5. Step 5: Solve for x
    x = 90,216,374.67/10,787.81
  6. Step 6: Final answer
    x = 8,362.81

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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.