Home / 22,392.19-30,905.63-12,838.49

Finding the Fourth Proportional to 22,392.19, 30,905.63 and 12,838.49

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Solution

The fourth proportional to 22,392.19, 30,905.63 and 12,838.49 is: 17,719.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,392.19 : 30,905.63 = 12,838.49 : x
  2. Step 2: Convert to fraction form
    22,392.19/30,905.63 = 12,838.49/x
  3. Step 3: Cross multiply
    22,392.19x = 30,905.63 × 12,838.49
  4. Step 4: Simplify right side
    22,392.19x = 396,781,621.70
  5. Step 5: Solve for x
    x = 396,781,621.70/22,392.19
  6. Step 6: Final answer
    x = 17,719.64

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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.