Home / 15,755.68-21,740.87-10,662.33

Finding the Fourth Proportional to 15,755.68, 21,740.87 and 10,662.33

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Solution

The fourth proportional to 15,755.68, 21,740.87 and 10,662.33 is: 14,712.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,755.68 : 21,740.87 = 10,662.33 : x
  2. Step 2: Convert to fraction form
    15,755.68/21,740.87 = 10,662.33/x
  3. Step 3: Cross multiply
    15,755.68x = 21,740.87 × 10,662.33
  4. Step 4: Simplify right side
    15,755.68x = 231,808,438.61
  5. Step 5: Solve for x
    x = 231,808,438.61/15,755.68
  6. Step 6: Final answer
    x = 14,712.69

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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.