Home / 15,618.03-21,553.39-8,903.53

Finding the Fourth Proportional to 15,618.03, 21,553.39 and 8,903.53

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Solution

The fourth proportional to 15,618.03, 21,553.39 and 8,903.53 is: 12,287.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,618.03 : 21,553.39 = 8,903.53 : x
  2. Step 2: Convert to fraction form
    15,618.03/21,553.39 = 8,903.53/x
  3. Step 3: Cross multiply
    15,618.03x = 21,553.39 × 8,903.53
  4. Step 4: Simplify right side
    15,618.03x = 191,901,292.54
  5. Step 5: Solve for x
    x = 191,901,292.54/15,618.03
  6. Step 6: Final answer
    x = 12,287.17

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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.