Home / 15,780.87-23,669.01-4,685.49

Finding the Fourth Proportional to 15,780.87, 23,669.01 and 4,685.49

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Solution

The fourth proportional to 15,780.87, 23,669.01 and 4,685.49 is: 7,027.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,780.87 : 23,669.01 = 4,685.49 : x
  2. Step 2: Convert to fraction form
    15,780.87/23,669.01 = 4,685.49/x
  3. Step 3: Cross multiply
    15,780.87x = 23,669.01 × 4,685.49
  4. Step 4: Simplify right side
    15,780.87x = 110,900,909.66
  5. Step 5: Solve for x
    x = 110,900,909.66/15,780.87
  6. Step 6: Final answer
    x = 7,027.55

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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.