Home / 15,709.24-21,665.77-10,665.19

Finding the Fourth Proportional to 15,709.24, 21,665.77 and 10,665.19

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Solution

The fourth proportional to 15,709.24, 21,665.77 and 10,665.19 is: 14,709.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,709.24 : 21,665.77 = 10,665.19 : x
  2. Step 2: Convert to fraction form
    15,709.24/21,665.77 = 10,665.19/x
  3. Step 3: Cross multiply
    15,709.24x = 21,665.77 × 10,665.19
  4. Step 4: Simplify right side
    15,709.24x = 231,069,553.55
  5. Step 5: Solve for x
    x = 231,069,553.55/15,709.24
  6. Step 6: Final answer
    x = 14,709.15

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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.