Home / 22,518.81-31,078.59-18,735.30

Finding the Fourth Proportional to 22,518.81, 31,078.59 and 18,735.30

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Solution

The fourth proportional to 22,518.81, 31,078.59 and 18,735.30 is: 25,856.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,518.81 : 31,078.59 = 18,735.30 : x
  2. Step 2: Convert to fraction form
    22,518.81/31,078.59 = 18,735.30/x
  3. Step 3: Cross multiply
    22,518.81x = 31,078.59 × 18,735.30
  4. Step 4: Simplify right side
    22,518.81x = 582,266,707.23
  5. Step 5: Solve for x
    x = 582,266,707.23/22,518.81
  6. Step 6: Final answer
    x = 25,856.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.