Home / 13,787.26-19,026.61-7,818.80

Finding the Fourth Proportional to 13,787.26, 19,026.61 and 7,818.80

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Solution

The fourth proportional to 13,787.26, 19,026.61 and 7,818.80 is: 10,790.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,787.26 : 19,026.61 = 7,818.80 : x
  2. Step 2: Convert to fraction form
    13,787.26/19,026.61 = 7,818.80/x
  3. Step 3: Cross multiply
    13,787.26x = 19,026.61 × 7,818.80
  4. Step 4: Simplify right side
    13,787.26x = 148,765,258.27
  5. Step 5: Solve for x
    x = 148,765,258.27/13,787.26
  6. Step 6: Final answer
    x = 10,790.05

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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.