Home / 20,549.26-28,357.86-11,117.62

Finding the Fourth Proportional to 20,549.26, 28,357.86 and 11,117.62

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Solution

The fourth proportional to 20,549.26, 28,357.86 and 11,117.62 is: 15,342.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,549.26 : 28,357.86 = 11,117.62 : x
  2. Step 2: Convert to fraction form
    20,549.26/28,357.86 = 11,117.62/x
  3. Step 3: Cross multiply
    20,549.26x = 28,357.86 × 11,117.62
  4. Step 4: Simplify right side
    20,549.26x = 315,271,911.49
  5. Step 5: Solve for x
    x = 315,271,911.49/20,549.26
  6. Step 6: Final answer
    x = 15,342.25

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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.