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Finding the Fourth Proportional to 34,886.52, 48,143.72 and 18,971.12

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Solution

The fourth proportional to 34,886.52, 48,143.72 and 18,971.12 is: 26,180.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,886.52 : 48,143.72 = 18,971.12 : x
  2. Step 2: Convert to fraction form
    34,886.52/48,143.72 = 18,971.12/x
  3. Step 3: Cross multiply
    34,886.52x = 48,143.72 × 18,971.12
  4. Step 4: Simplify right side
    34,886.52x = 913,340,289.37
  5. Step 5: Solve for x
    x = 913,340,289.37/34,886.52
  6. Step 6: Final answer
    x = 26,180.32

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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.