Home / 11,685.78-17,535.60-4,669.20

Finding the Fourth Proportional to 11,685.78, 17,535.60 and 4,669.20

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Solution

The fourth proportional to 11,685.78, 17,535.60 and 4,669.20 is: 7,006.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,685.78 : 17,535.60 = 4,669.20 : x
  2. Step 2: Convert to fraction form
    11,685.78/17,535.60 = 4,669.20/x
  3. Step 3: Cross multiply
    11,685.78x = 17,535.60 × 4,669.20
  4. Step 4: Simplify right side
    11,685.78x = 81,877,223.52
  5. Step 5: Solve for x
    x = 81,877,223.52/11,685.78
  6. Step 6: Final answer
    x = 7,006.57

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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.