Home / 20,549.00-28,357.65-11,117.57

Finding the Fourth Proportional to 20,549.00, 28,357.65 and 11,117.57

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Solution

The fourth proportional to 20,549.00, 28,357.65 and 11,117.57 is: 15,342.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,549.00 : 28,357.65 = 11,117.57 : x
  2. Step 2: Convert to fraction form
    20,549.00/28,357.65 = 11,117.57/x
  3. Step 3: Cross multiply
    20,549.00x = 28,357.65 × 11,117.57
  4. Step 4: Simplify right side
    20,549.00x = 315,268,017.12
  5. Step 5: Solve for x
    x = 315,268,017.12/20,549.00
  6. Step 6: Final answer
    x = 15,342.26

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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.