Home / 10,787.56-14,896.62-8,130.40

Finding the Fourth Proportional to 10,787.56, 14,896.62 and 8,130.40

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Solution

The fourth proportional to 10,787.56, 14,896.62 and 8,130.40 is: 11,227.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,787.56 : 14,896.62 = 8,130.40 : x
  2. Step 2: Convert to fraction form
    10,787.56/14,896.62 = 8,130.40/x
  3. Step 3: Cross multiply
    10,787.56x = 14,896.62 × 8,130.40
  4. Step 4: Simplify right side
    10,787.56x = 121,115,479.25
  5. Step 5: Solve for x
    x = 121,115,479.25/10,787.56
  6. Step 6: Final answer
    x = 11,227.33

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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.