Home / 12,861.35-19,260.88-8,901.51

Finding the Fourth Proportional to 12,861.35, 19,260.88 and 8,901.51

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Solution

The fourth proportional to 12,861.35, 19,260.88 and 8,901.51 is: 13,330.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,861.35 : 19,260.88 = 8,901.51 : x
  2. Step 2: Convert to fraction form
    12,861.35/19,260.88 = 8,901.51/x
  3. Step 3: Cross multiply
    12,861.35x = 19,260.88 × 8,901.51
  4. Step 4: Simplify right side
    12,861.35x = 171,450,915.93
  5. Step 5: Solve for x
    x = 171,450,915.93/12,861.35
  6. Step 6: Final answer
    x = 13,330.71

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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.