Home / 15,363.69-21,202.31-8,649.57

Finding the Fourth Proportional to 15,363.69, 21,202.31 and 8,649.57

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Solution

The fourth proportional to 15,363.69, 21,202.31 and 8,649.57 is: 11,936.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,363.69 : 21,202.31 = 8,649.57 : x
  2. Step 2: Convert to fraction form
    15,363.69/21,202.31 = 8,649.57/x
  3. Step 3: Cross multiply
    15,363.69x = 21,202.31 × 8,649.57
  4. Step 4: Simplify right side
    15,363.69x = 183,390,916.99
  5. Step 5: Solve for x
    x = 183,390,916.99/15,363.69
  6. Step 6: Final answer
    x = 11,936.64

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1.5x scale

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.