Home / 15,615.80-21,549.96-8,542.52

Finding the Fourth Proportional to 15,615.80, 21,549.96 and 8,542.52

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Solution

The fourth proportional to 15,615.80, 21,549.96 and 8,542.52 is: 11,788.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,615.80 : 21,549.96 = 8,542.52 : x
  2. Step 2: Convert to fraction form
    15,615.80/21,549.96 = 8,542.52/x
  3. Step 3: Cross multiply
    15,615.80x = 21,549.96 × 8,542.52
  4. Step 4: Simplify right side
    15,615.80x = 184,090,964.30
  5. Step 5: Solve for x
    x = 184,090,964.30/15,615.80
  6. Step 6: Final answer
    x = 11,788.76

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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.