Home / 15,402.79-21,261.61-11,993.06

Finding the Fourth Proportional to 15,402.79, 21,261.61 and 11,993.06

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Solution

The fourth proportional to 15,402.79, 21,261.61 and 11,993.06 is: 16,554.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,402.79 : 21,261.61 = 11,993.06 : x
  2. Step 2: Convert to fraction form
    15,402.79/21,261.61 = 11,993.06/x
  3. Step 3: Cross multiply
    15,402.79x = 21,261.61 × 11,993.06
  4. Step 4: Simplify right side
    15,402.79x = 254,991,598.15
  5. Step 5: Solve for x
    x = 254,991,598.15/15,402.79
  6. Step 6: Final answer
    x = 16,554.90

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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.