Home / 20,308.34-28,024.25-11,356.49

Finding the Fourth Proportional to 20,308.34, 28,024.25 and 11,356.49

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Solution

The fourth proportional to 20,308.34, 28,024.25 and 11,356.49 is: 15,671.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,308.34 : 28,024.25 = 11,356.49 : x
  2. Step 2: Convert to fraction form
    20,308.34/28,024.25 = 11,356.49/x
  3. Step 3: Cross multiply
    20,308.34x = 28,024.25 × 11,356.49
  4. Step 4: Simplify right side
    20,308.34x = 318,257,128.16
  5. Step 5: Solve for x
    x = 318,257,128.16/20,308.34
  6. Step 6: Final answer
    x = 15,671.25

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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.