Home / 15,667.68-21,625.16-10,640.28

Finding the Fourth Proportional to 15,667.68, 21,625.16 and 10,640.28

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Solution

The fourth proportional to 15,667.68, 21,625.16 and 10,640.28 is: 14,686.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,667.68 : 21,625.16 = 10,640.28 : x
  2. Step 2: Convert to fraction form
    15,667.68/21,625.16 = 10,640.28/x
  3. Step 3: Cross multiply
    15,667.68x = 21,625.16 × 10,640.28
  4. Step 4: Simplify right side
    15,667.68x = 230,097,757.44
  5. Step 5: Solve for x
    x = 230,097,757.44/15,667.68
  6. Step 6: Final answer
    x = 14,686.14

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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.