Home / 15,588.62-21,512.76-8,515.16

Finding the Fourth Proportional to 15,588.62, 21,512.76 and 8,515.16

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Solution

The fourth proportional to 15,588.62, 21,512.76 and 8,515.16 is: 11,751.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,588.62 : 21,512.76 = 8,515.16 : x
  2. Step 2: Convert to fraction form
    15,588.62/21,512.76 = 8,515.16/x
  3. Step 3: Cross multiply
    15,588.62x = 21,512.76 × 8,515.16
  4. Step 4: Simplify right side
    15,588.62x = 183,184,593.44
  5. Step 5: Solve for x
    x = 183,184,593.44/15,588.62
  6. Step 6: Final answer
    x = 11,751.17

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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.