Home / 27,420.78-41,137.05-8,702.32

Finding the Fourth Proportional to 27,420.78, 41,137.05 and 8,702.32

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Solution

The fourth proportional to 27,420.78, 41,137.05 and 8,702.32 is: 13,055.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,420.78 : 41,137.05 = 8,702.32 : x
  2. Step 2: Convert to fraction form
    27,420.78/41,137.05 = 8,702.32/x
  3. Step 3: Cross multiply
    27,420.78x = 41,137.05 × 8,702.32
  4. Step 4: Simplify right side
    27,420.78x = 357,987,730.93
  5. Step 5: Solve for x
    x = 357,987,730.93/27,420.78
  6. Step 6: Final answer
    x = 13,055.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.