Home / 20,657.08-28,511.28-13,584.16

Finding the Fourth Proportional to 20,657.08, 28,511.28 and 13,584.16

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Solution

The fourth proportional to 20,657.08, 28,511.28 and 13,584.16 is: 18,749.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,657.08 : 28,511.28 = 13,584.16 : x
  2. Step 2: Convert to fraction form
    20,657.08/28,511.28 = 13,584.16/x
  3. Step 3: Cross multiply
    20,657.08x = 28,511.28 × 13,584.16
  4. Step 4: Simplify right side
    20,657.08x = 387,301,789.32
  5. Step 5: Solve for x
    x = 387,301,789.32/20,657.08
  6. Step 6: Final answer
    x = 18,749.11

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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.