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Finding the Fourth Proportional to 13,560.65, 18,715.48 and 7,895.50

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Solution

The fourth proportional to 13,560.65, 18,715.48 and 7,895.50 is: 10,896.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,560.65 : 18,715.48 = 7,895.50 : x
  2. Step 2: Convert to fraction form
    13,560.65/18,715.48 = 7,895.50/x
  3. Step 3: Cross multiply
    13,560.65x = 18,715.48 × 7,895.50
  4. Step 4: Simplify right side
    13,560.65x = 147,767,993.33
  5. Step 5: Solve for x
    x = 147,767,993.33/13,560.65
  6. Step 6: Final answer
    x = 10,896.82

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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.