Home / 13,530.80-20,306.48-10,904.72

Finding the Fourth Proportional to 13,530.80, 20,306.48 and 10,904.72

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Solution

The fourth proportional to 13,530.80, 20,306.48 and 10,904.72 is: 16,365.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,530.80 : 20,306.48 = 10,904.72 : x
  2. Step 2: Convert to fraction form
    13,530.80/20,306.48 = 10,904.72/x
  3. Step 3: Cross multiply
    13,530.80x = 20,306.48 × 10,904.72
  4. Step 4: Simplify right side
    13,530.80x = 221,436,478.59
  5. Step 5: Solve for x
    x = 221,436,478.59/13,530.80
  6. Step 6: Final answer
    x = 16,365.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.