Home / 13,734.40-18,953.61-8,069.38

Finding the Fourth Proportional to 13,734.40, 18,953.61 and 8,069.38

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Solution

The fourth proportional to 13,734.40, 18,953.61 and 8,069.38 is: 11,135.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,734.40 : 18,953.61 = 8,069.38 : x
  2. Step 2: Convert to fraction form
    13,734.40/18,953.61 = 8,069.38/x
  3. Step 3: Cross multiply
    13,734.40x = 18,953.61 × 8,069.38
  4. Step 4: Simplify right side
    13,734.40x = 152,943,834.08
  5. Step 5: Solve for x
    x = 152,943,834.08/13,734.40
  6. Step 6: Final answer
    x = 11,135.82

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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.