Home / 13,913.97-20,870.73-4,426.15

Finding the Fourth Proportional to 13,913.97, 20,870.73 and 4,426.15

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Solution

The fourth proportional to 13,913.97, 20,870.73 and 4,426.15 is: 6,639.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,913.97 : 20,870.73 = 4,426.15 : x
  2. Step 2: Convert to fraction form
    13,913.97/20,870.73 = 4,426.15/x
  3. Step 3: Cross multiply
    13,913.97x = 20,870.73 × 4,426.15
  4. Step 4: Simplify right side
    13,913.97x = 92,376,855.11
  5. Step 5: Solve for x
    x = 92,376,855.11/13,913.97
  6. Step 6: Final answer
    x = 6,639.15

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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.