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Finding the Fourth Proportional to 34,870.15, 48,120.24 and 18,955

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Solution

The fourth proportional to 34,870.15, 48,120.24 and 18,955 is: 26,157.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,870.15 : 48,120.24 = 18,955 : x
  2. Step 2: Convert to fraction form
    34,870.15/48,120.24 = 18,955/x
  3. Step 3: Cross multiply
    34,870.15x = 48,120.24 × 18,955
  4. Step 4: Simplify right side
    34,870.15x = 912,119,149.20
  5. Step 5: Solve for x
    x = 912,119,149.20/34,870.15
  6. Step 6: Final answer
    x = 26,157.59

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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.