Home / 15,615.37-21,549.27-8,542.18

Finding the Fourth Proportional to 15,615.37, 21,549.27 and 8,542.18

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Solution

The fourth proportional to 15,615.37, 21,549.27 and 8,542.18 is: 11,788.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,615.37 : 21,549.27 = 8,542.18 : x
  2. Step 2: Convert to fraction form
    15,615.37/21,549.27 = 8,542.18/x
  3. Step 3: Cross multiply
    15,615.37x = 21,549.27 × 8,542.18
  4. Step 4: Simplify right side
    15,615.37x = 184,077,743.21
  5. Step 5: Solve for x
    x = 184,077,743.21/15,615.37
  6. Step 6: Final answer
    x = 11,788.24

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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.