Home / 19,019.79-28,534.35-13,408.43

Finding the Fourth Proportional to 19,019.79, 28,534.35 and 13,408.43

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Solution

The fourth proportional to 19,019.79, 28,534.35 and 13,408.43 is: 20,115.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,019.79 : 28,534.35 = 13,408.43 : x
  2. Step 2: Convert to fraction form
    19,019.79/28,534.35 = 13,408.43/x
  3. Step 3: Cross multiply
    19,019.79x = 28,534.35 × 13,408.43
  4. Step 4: Simplify right side
    19,019.79x = 382,600,742.18
  5. Step 5: Solve for x
    x = 382,600,742.18/19,019.79
  6. Step 6: Final answer
    x = 20,115.93

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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.