Home / 15,615.99-21,549.78-8,542.26

Finding the Fourth Proportional to 15,615.99, 21,549.78 and 8,542.26

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Solution

The fourth proportional to 15,615.99, 21,549.78 and 8,542.26 is: 11,788.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,615.99 : 21,549.78 = 8,542.26 : x
  2. Step 2: Convert to fraction form
    15,615.99/21,549.78 = 8,542.26/x
  3. Step 3: Cross multiply
    15,615.99x = 21,549.78 × 8,542.26
  4. Step 4: Simplify right side
    15,615.99x = 184,083,823.70
  5. Step 5: Solve for x
    x = 184,083,823.70/15,615.99
  6. Step 6: Final answer
    x = 11,788.16

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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.