Home / 13,956.40-20,934.60-9,787.60

Finding the Fourth Proportional to 13,956.40, 20,934.60 and 9,787.60

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Solution

The fourth proportional to 13,956.40, 20,934.60 and 9,787.60 is: 14,681.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,956.40 : 20,934.60 = 9,787.60 : x
  2. Step 2: Convert to fraction form
    13,956.40/20,934.60 = 9,787.60/x
  3. Step 3: Cross multiply
    13,956.40x = 20,934.60 × 9,787.60
  4. Step 4: Simplify right side
    13,956.40x = 204,899,490.96
  5. Step 5: Solve for x
    x = 204,899,490.96/13,956.40
  6. Step 6: Final answer
    x = 14,681.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.