Home / 20,078.08-27,657.36-15,354.40

Finding the Fourth Proportional to 20,078.08, 27,657.36 and 15,354.40

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Solution

The fourth proportional to 20,078.08, 27,657.36 and 15,354.40 is: 21,150.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,078.08 : 27,657.36 = 15,354.40 : x
  2. Step 2: Convert to fraction form
    20,078.08/27,657.36 = 15,354.40/x
  3. Step 3: Cross multiply
    20,078.08x = 27,657.36 × 15,354.40
  4. Step 4: Simplify right side
    20,078.08x = 424,662,168.38
  5. Step 5: Solve for x
    x = 424,662,168.38/20,078.08
  6. Step 6: Final answer
    x = 21,150.54

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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.