Home / 20,904.71-28,848.51-11,344.59

Finding the Fourth Proportional to 20,904.71, 28,848.51 and 11,344.59

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Solution

The fourth proportional to 20,904.71, 28,848.51 and 11,344.59 is: 15,655.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,904.71 : 28,848.51 = 11,344.59 : x
  2. Step 2: Convert to fraction form
    20,904.71/28,848.51 = 11,344.59/x
  3. Step 3: Cross multiply
    20,904.71x = 28,848.51 × 11,344.59
  4. Step 4: Simplify right side
    20,904.71x = 327,274,687.63
  5. Step 5: Solve for x
    x = 327,274,687.63/20,904.71
  6. Step 6: Final answer
    x = 15,655.55

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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.