Home / 18,749.54-28,130.07-6,438.50

Finding the Fourth Proportional to 18,749.54, 28,130.07 and 6,438.50

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Solution

The fourth proportional to 18,749.54, 28,130.07 and 6,438.50 is: 9,659.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,749.54 : 28,130.07 = 6,438.50 : x
  2. Step 2: Convert to fraction form
    18,749.54/28,130.07 = 6,438.50/x
  3. Step 3: Cross multiply
    18,749.54x = 28,130.07 × 6,438.50
  4. Step 4: Simplify right side
    18,749.54x = 181,115,455.70
  5. Step 5: Solve for x
    x = 181,115,455.70/18,749.54
  6. Step 6: Final answer
    x = 9,659.73

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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.