Home / 13,788.42-19,026.47-8,122.80

Finding the Fourth Proportional to 13,788.42, 19,026.47 and 8,122.80

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Solution

The fourth proportional to 13,788.42, 19,026.47 and 8,122.80 is: 11,208.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,788.42 : 19,026.47 = 8,122.80 : x
  2. Step 2: Convert to fraction form
    13,788.42/19,026.47 = 8,122.80/x
  3. Step 3: Cross multiply
    13,788.42x = 19,026.47 × 8,122.80
  4. Step 4: Simplify right side
    13,788.42x = 154,548,210.52
  5. Step 5: Solve for x
    x = 154,548,210.52/13,788.42
  6. Step 6: Final answer
    x = 11,208.55

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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.