Home / 19,517.49-26,931.24-11,856.78

Finding the Fourth Proportional to 19,517.49, 26,931.24 and 11,856.78

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Solution

The fourth proportional to 19,517.49, 26,931.24 and 11,856.78 is: 16,360.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,517.49 : 26,931.24 = 11,856.78 : x
  2. Step 2: Convert to fraction form
    19,517.49/26,931.24 = 11,856.78/x
  3. Step 3: Cross multiply
    19,517.49x = 26,931.24 × 11,856.78
  4. Step 4: Simplify right side
    19,517.49x = 319,317,787.81
  5. Step 5: Solve for x
    x = 319,317,787.81/19,517.49
  6. Step 6: Final answer
    x = 16,360.60

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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.