Home / 15,775.10-21,769.31-8,701.53

Finding the Fourth Proportional to 15,775.10, 21,769.31 and 8,701.53

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Solution

The fourth proportional to 15,775.10, 21,769.31 and 8,701.53 is: 12,007.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,775.10 : 21,769.31 = 8,701.53 : x
  2. Step 2: Convert to fraction form
    15,775.10/21,769.31 = 8,701.53/x
  3. Step 3: Cross multiply
    15,775.10x = 21,769.31 × 8,701.53
  4. Step 4: Simplify right side
    15,775.10x = 189,426,195.22
  5. Step 5: Solve for x
    x = 189,426,195.22/15,775.10
  6. Step 6: Final answer
    x = 12,007.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.