Home / 20,507.16-28,296.44-11,430.54

Finding the Fourth Proportional to 20,507.16, 28,296.44 and 11,430.54

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Solution

The fourth proportional to 20,507.16, 28,296.44 and 11,430.54 is: 15,772.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,507.16 : 28,296.44 = 11,430.54 : x
  2. Step 2: Convert to fraction form
    20,507.16/28,296.44 = 11,430.54/x
  3. Step 3: Cross multiply
    20,507.16x = 28,296.44 × 11,430.54
  4. Step 4: Simplify right side
    20,507.16x = 323,443,589.28
  5. Step 5: Solve for x
    x = 323,443,589.28/20,507.16
  6. Step 6: Final answer
    x = 15,772.23

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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.