Home / 18,972.09-28,461.47-6,489.18

Finding the Fourth Proportional to 18,972.09, 28,461.47 and 6,489.18

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Solution

The fourth proportional to 18,972.09, 28,461.47 and 6,489.18 is: 9,734.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,972.09 : 28,461.47 = 6,489.18 : x
  2. Step 2: Convert to fraction form
    18,972.09/28,461.47 = 6,489.18/x
  3. Step 3: Cross multiply
    18,972.09x = 28,461.47 × 6,489.18
  4. Step 4: Simplify right side
    18,972.09x = 184,691,569.45
  5. Step 5: Solve for x
    x = 184,691,569.45/18,972.09
  6. Step 6: Final answer
    x = 9,734.91

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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.