Home / 15,534.13-21,449.73-12,663.30

Finding the Fourth Proportional to 15,534.13, 21,449.73 and 12,663.30

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Solution

The fourth proportional to 15,534.13, 21,449.73 and 12,663.30 is: 17,485.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,534.13 : 21,449.73 = 12,663.30 : x
  2. Step 2: Convert to fraction form
    15,534.13/21,449.73 = 12,663.30/x
  3. Step 3: Cross multiply
    15,534.13x = 21,449.73 × 12,663.30
  4. Step 4: Simplify right side
    15,534.13x = 271,624,365.91
  5. Step 5: Solve for x
    x = 271,624,365.91/15,534.13
  6. Step 6: Final answer
    x = 17,485.65

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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.