Home / 20,304.72-28,019.56-11,353.36

Finding the Fourth Proportional to 20,304.72, 28,019.56 and 11,353.36

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Solution

The fourth proportional to 20,304.72, 28,019.56 and 11,353.36 is: 15,667.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,304.72 : 28,019.56 = 11,353.36 : x
  2. Step 2: Convert to fraction form
    20,304.72/28,019.56 = 11,353.36/x
  3. Step 3: Cross multiply
    20,304.72x = 28,019.56 × 11,353.36
  4. Step 4: Simplify right side
    20,304.72x = 318,116,151.72
  5. Step 5: Solve for x
    x = 318,116,151.72/20,304.72
  6. Step 6: Final answer
    x = 15,667.10

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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.