Home / 19,670.45-29,479.55-9,138.83

Finding the Fourth Proportional to 19,670.45, 29,479.55 and 9,138.83

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Solution

The fourth proportional to 19,670.45, 29,479.55 and 9,138.83 is: 13,696.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,670.45 : 29,479.55 = 9,138.83 : x
  2. Step 2: Convert to fraction form
    19,670.45/29,479.55 = 9,138.83/x
  3. Step 3: Cross multiply
    19,670.45x = 29,479.55 × 9,138.83
  4. Step 4: Simplify right side
    19,670.45x = 269,408,402.83
  5. Step 5: Solve for x
    x = 269,408,402.83/19,670.45
  6. Step 6: Final answer
    x = 13,696.10

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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.