Home / 20,710.50-31,066.47-6,859.14

Finding the Fourth Proportional to 20,710.50, 31,066.47 and 6,859.14

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Solution

The fourth proportional to 20,710.50, 31,066.47 and 6,859.14 is: 10,288.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,710.50 : 31,066.47 = 6,859.14 : x
  2. Step 2: Convert to fraction form
    20,710.50/31,066.47 = 6,859.14/x
  3. Step 3: Cross multiply
    20,710.50x = 31,066.47 × 6,859.14
  4. Step 4: Simplify right side
    20,710.50x = 213,089,267.04
  5. Step 5: Solve for x
    x = 213,089,267.04/20,710.50
  6. Step 6: Final answer
    x = 10,288.95

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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.