Home / 22,400.15-30,911.63-12,328.20

Finding the Fourth Proportional to 22,400.15, 30,911.63 and 12,328.20

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Solution

The fourth proportional to 22,400.15, 30,911.63 and 12,328.20 is: 17,012.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,400.15 : 30,911.63 = 12,328.20 : x
  2. Step 2: Convert to fraction form
    22,400.15/30,911.63 = 12,328.20/x
  3. Step 3: Cross multiply
    22,400.15x = 30,911.63 × 12,328.20
  4. Step 4: Simplify right side
    22,400.15x = 381,084,695.33
  5. Step 5: Solve for x
    x = 381,084,695.33/22,400.15
  6. Step 6: Final answer
    x = 17,012.60

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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.