Home / 20,698.40-31,044.47-7,550.80

Finding the Fourth Proportional to 20,698.40, 31,044.47 and 7,550.80

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Solution

The fourth proportional to 20,698.40, 31,044.47 and 7,550.80 is: 11,325.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,698.40 : 31,044.47 = 7,550.80 : x
  2. Step 2: Convert to fraction form
    20,698.40/31,044.47 = 7,550.80/x
  3. Step 3: Cross multiply
    20,698.40x = 31,044.47 × 7,550.80
  4. Step 4: Simplify right side
    20,698.40x = 234,410,468.71
  5. Step 5: Solve for x
    x = 234,410,468.71/20,698.40
  6. Step 6: Final answer
    x = 11,325.05

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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.