Home / 18,971.82-28,461.06-6,488.90

Finding the Fourth Proportional to 18,971.82, 28,461.06 and 6,488.90

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Solution

The fourth proportional to 18,971.82, 28,461.06 and 6,488.90 is: 9,734.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,971.82 : 28,461.06 = 6,488.90 : x
  2. Step 2: Convert to fraction form
    18,971.82/28,461.06 = 6,488.90/x
  3. Step 3: Cross multiply
    18,971.82x = 28,461.06 × 6,488.90
  4. Step 4: Simplify right side
    18,971.82x = 184,680,972.23
  5. Step 5: Solve for x
    x = 184,680,972.23/18,971.82
  6. Step 6: Final answer
    x = 9,734.49

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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.