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Finding the Fourth Proportional to 34,863, 48,108.90 and 18,947.31

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Solution

The fourth proportional to 34,863, 48,108.90 and 18,947.31 is: 26,146.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,863 : 48,108.90 = 18,947.31 : x
  2. Step 2: Convert to fraction form
    34,863/48,108.90 = 18,947.31/x
  3. Step 3: Cross multiply
    34,863x = 48,108.90 × 18,947.31
  4. Step 4: Simplify right side
    34,863x = 911,534,242.06
  5. Step 5: Solve for x
    x = 911,534,242.06/34,863
  6. Step 6: Final answer
    x = 26,146.18

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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.