Home / 21,533.85-29,720.52-13,569.93

Finding the Fourth Proportional to 21,533.85, 29,720.52 and 13,569.93

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Solution

The fourth proportional to 21,533.85, 29,720.52 and 13,569.93 is: 18,728.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,533.85 : 29,720.52 = 13,569.93 : x
  2. Step 2: Convert to fraction form
    21,533.85/29,720.52 = 13,569.93/x
  3. Step 3: Cross multiply
    21,533.85x = 29,720.52 × 13,569.93
  4. Step 4: Simplify right side
    21,533.85x = 403,305,375.96
  5. Step 5: Solve for x
    x = 403,305,375.96/21,533.85
  6. Step 6: Final answer
    x = 18,728.90

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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.