Home / 20,698.10-31,048.20-5,909.18

Finding the Fourth Proportional to 20,698.10, 31,048.20 and 5,909.18

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Solution

The fourth proportional to 20,698.10, 31,048.20 and 5,909.18 is: 8,864.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,698.10 : 31,048.20 = 5,909.18 : x
  2. Step 2: Convert to fraction form
    20,698.10/31,048.20 = 5,909.18/x
  3. Step 3: Cross multiply
    20,698.10x = 31,048.20 × 5,909.18
  4. Step 4: Simplify right side
    20,698.10x = 183,469,402.48
  5. Step 5: Solve for x
    x = 183,469,402.48/20,698.10
  6. Step 6: Final answer
    x = 8,864.07

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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.