Home / 20,429.52-28,185.48-13,360.08

Finding the Fourth Proportional to 20,429.52, 28,185.48 and 13,360.08

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Solution

The fourth proportional to 20,429.52, 28,185.48 and 13,360.08 is: 18,432.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,429.52 : 28,185.48 = 13,360.08 : x
  2. Step 2: Convert to fraction form
    20,429.52/28,185.48 = 13,360.08/x
  3. Step 3: Cross multiply
    20,429.52x = 28,185.48 × 13,360.08
  4. Step 4: Simplify right side
    20,429.52x = 376,560,267.64
  5. Step 5: Solve for x
    x = 376,560,267.64/20,429.52
  6. Step 6: Final answer
    x = 18,432.16

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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.