Home / 12,561.09-18,844.79-8,870.54

Finding the Fourth Proportional to 12,561.09, 18,844.79 and 8,870.54

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Solution

The fourth proportional to 12,561.09, 18,844.79 and 8,870.54 is: 13,308.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,561.09 : 18,844.79 = 8,870.54 : x
  2. Step 2: Convert to fraction form
    12,561.09/18,844.79 = 8,870.54/x
  3. Step 3: Cross multiply
    12,561.09x = 18,844.79 × 8,870.54
  4. Step 4: Simplify right side
    12,561.09x = 167,163,463.49
  5. Step 5: Solve for x
    x = 167,163,463.49/12,561.09
  6. Step 6: Final answer
    x = 13,308.04

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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.