Home / 22,180.86-30,622.05-15,384.78

Finding the Fourth Proportional to 22,180.86, 30,622.05 and 15,384.78

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Solution

The fourth proportional to 22,180.86, 30,622.05 and 15,384.78 is: 21,239.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,180.86 : 30,622.05 = 15,384.78 : x
  2. Step 2: Convert to fraction form
    22,180.86/30,622.05 = 15,384.78/x
  3. Step 3: Cross multiply
    22,180.86x = 30,622.05 × 15,384.78
  4. Step 4: Simplify right side
    22,180.86x = 471,113,502.40
  5. Step 5: Solve for x
    x = 471,113,502.40/22,180.86
  6. Step 6: Final answer
    x = 21,239.64

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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.