Home / 13,551.76-18,703.20-9,787.06

Finding the Fourth Proportional to 13,551.76, 18,703.20 and 9,787.06

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Solution

The fourth proportional to 13,551.76, 18,703.20 and 9,787.06 is: 13,507.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,551.76 : 18,703.20 = 9,787.06 : x
  2. Step 2: Convert to fraction form
    13,551.76/18,703.20 = 9,787.06/x
  3. Step 3: Cross multiply
    13,551.76x = 18,703.20 × 9,787.06
  4. Step 4: Simplify right side
    13,551.76x = 183,049,340.59
  5. Step 5: Solve for x
    x = 183,049,340.59/13,551.76
  6. Step 6: Final answer
    x = 13,507.42

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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.