Home / 18,815.88-28,218.06-6,501

Finding the Fourth Proportional to 18,815.88, 28,218.06 and 6,501

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Solution

The fourth proportional to 18,815.88, 28,218.06 and 6,501 is: 9,749.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,815.88 : 28,218.06 = 6,501 : x
  2. Step 2: Convert to fraction form
    18,815.88/28,218.06 = 6,501/x
  3. Step 3: Cross multiply
    18,815.88x = 28,218.06 × 6,501
  4. Step 4: Simplify right side
    18,815.88x = 183,445,608.06
  5. Step 5: Solve for x
    x = 183,445,608.06/18,815.88
  6. Step 6: Final answer
    x = 9,749.51

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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.