Home / 20,138.10-30,178.35-14,831.70

Finding the Fourth Proportional to 20,138.10, 30,178.35 and 14,831.70

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Solution

The fourth proportional to 20,138.10, 30,178.35 and 14,831.70 is: 22,226.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,138.10 : 30,178.35 = 14,831.70 : x
  2. Step 2: Convert to fraction form
    20,138.10/30,178.35 = 14,831.70/x
  3. Step 3: Cross multiply
    20,138.10x = 30,178.35 × 14,831.70
  4. Step 4: Simplify right side
    20,138.10x = 447,596,233.70
  5. Step 5: Solve for x
    x = 447,596,233.70/20,138.10
  6. Step 6: Final answer
    x = 22,226.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.