Home / 15,448.41-21,318.76-8,374.78

Finding the Fourth Proportional to 15,448.41, 21,318.76 and 8,374.78

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Solution

The fourth proportional to 15,448.41, 21,318.76 and 8,374.78 is: 11,557.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,448.41 : 21,318.76 = 8,374.78 : x
  2. Step 2: Convert to fraction form
    15,448.41/21,318.76 = 8,374.78/x
  3. Step 3: Cross multiply
    15,448.41x = 21,318.76 × 8,374.78
  4. Step 4: Simplify right side
    15,448.41x = 178,539,924.87
  5. Step 5: Solve for x
    x = 178,539,924.87/15,448.41
  6. Step 6: Final answer
    x = 11,557.17

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1.5x scale

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.