Home / 20,670.04-31,005.06-5,087.68

Finding the Fourth Proportional to 20,670.04, 31,005.06 and 5,087.68

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Solution

The fourth proportional to 20,670.04, 31,005.06 and 5,087.68 is: 7,631.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,670.04 : 31,005.06 = 5,087.68 : x
  2. Step 2: Convert to fraction form
    20,670.04/31,005.06 = 5,087.68/x
  3. Step 3: Cross multiply
    20,670.04x = 31,005.06 × 5,087.68
  4. Step 4: Simplify right side
    20,670.04x = 157,743,823.66
  5. Step 5: Solve for x
    x = 157,743,823.66/20,670.04
  6. Step 6: Final answer
    x = 7,631.52

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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.