Home / 12,886.89-19,315.35-10,550.85

Finding the Fourth Proportional to 12,886.89, 19,315.35 and 10,550.85

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Solution

The fourth proportional to 12,886.89, 19,315.35 and 10,550.85 is: 15,814.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,886.89 : 19,315.35 = 10,550.85 : x
  2. Step 2: Convert to fraction form
    12,886.89/19,315.35 = 10,550.85/x
  3. Step 3: Cross multiply
    12,886.89x = 19,315.35 × 10,550.85
  4. Step 4: Simplify right side
    12,886.89x = 203,793,360.55
  5. Step 5: Solve for x
    x = 203,793,360.55/12,886.89
  6. Step 6: Final answer
    x = 15,814.01

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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.