Home / 22,119.66-30,524.85-12,688.02

Finding the Fourth Proportional to 22,119.66, 30,524.85 and 12,688.02

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Solution

The fourth proportional to 22,119.66, 30,524.85 and 12,688.02 is: 17,509.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,119.66 : 30,524.85 = 12,688.02 : x
  2. Step 2: Convert to fraction form
    22,119.66/30,524.85 = 12,688.02/x
  3. Step 3: Cross multiply
    22,119.66x = 30,524.85 × 12,688.02
  4. Step 4: Simplify right side
    22,119.66x = 387,299,907.30
  5. Step 5: Solve for x
    x = 387,299,907.30/22,119.66
  6. Step 6: Final answer
    x = 17,509.31

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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.