Home / 15,588.99-21,512.68-8,515.42

Finding the Fourth Proportional to 15,588.99, 21,512.68 and 8,515.42

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Solution

The fourth proportional to 15,588.99, 21,512.68 and 8,515.42 is: 11,751.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,588.99 : 21,512.68 = 8,515.42 : x
  2. Step 2: Convert to fraction form
    15,588.99/21,512.68 = 8,515.42/x
  3. Step 3: Cross multiply
    15,588.99x = 21,512.68 × 8,515.42
  4. Step 4: Simplify right side
    15,588.99x = 183,189,430.46
  5. Step 5: Solve for x
    x = 183,189,430.46/15,588.99
  6. Step 6: Final answer
    x = 11,751.21

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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.