Home / 21,919.92-30,242.23-12,358.62

Finding the Fourth Proportional to 21,919.92, 30,242.23 and 12,358.62

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Solution

The fourth proportional to 21,919.92, 30,242.23 and 12,358.62 is: 17,050.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,919.92 : 30,242.23 = 12,358.62 : x
  2. Step 2: Convert to fraction form
    21,919.92/30,242.23 = 12,358.62/x
  3. Step 3: Cross multiply
    21,919.92x = 30,242.23 × 12,358.62
  4. Step 4: Simplify right side
    21,919.92x = 373,752,228.52
  5. Step 5: Solve for x
    x = 373,752,228.52/21,919.92
  6. Step 6: Final answer
    x = 17,050.80

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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.