Home / 20,707.38-30,910.71-19,165.46

Finding the Fourth Proportional to 20,707.38, 30,910.71 and 19,165.46

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Solution

The fourth proportional to 20,707.38, 30,910.71 and 19,165.46 is: 28,609.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,707.38 : 30,910.71 = 19,165.46 : x
  2. Step 2: Convert to fraction form
    20,707.38/30,910.71 = 19,165.46/x
  3. Step 3: Cross multiply
    20,707.38x = 30,910.71 × 19,165.46
  4. Step 4: Simplify right side
    20,707.38x = 592,417,880.25
  5. Step 5: Solve for x
    x = 592,417,880.25/20,707.38
  6. Step 6: Final answer
    x = 28,609.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.