Home / 18,749.82-28,130.58-5,602.72

Finding the Fourth Proportional to 18,749.82, 28,130.58 and 5,602.72

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Solution

The fourth proportional to 18,749.82, 28,130.58 and 5,602.72 is: 8,405.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,749.82 : 28,130.58 = 5,602.72 : x
  2. Step 2: Convert to fraction form
    18,749.82/28,130.58 = 5,602.72/x
  3. Step 3: Cross multiply
    18,749.82x = 28,130.58 × 5,602.72
  4. Step 4: Simplify right side
    18,749.82x = 157,607,763.18
  5. Step 5: Solve for x
    x = 157,607,763.18/18,749.82
  6. Step 6: Final answer
    x = 8,405.83

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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.