Home / 34,693.70-47,877.40-18,778.20

Finding the Fourth Proportional to 34,693.70, 47,877.40 and 18,778.20

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Solution

The fourth proportional to 34,693.70, 47,877.40 and 18,778.20 is: 25,913.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,693.70 : 47,877.40 = 18,778.20 : x
  2. Step 2: Convert to fraction form
    34,693.70/47,877.40 = 18,778.20/x
  3. Step 3: Cross multiply
    34,693.70x = 47,877.40 × 18,778.20
  4. Step 4: Simplify right side
    34,693.70x = 899,051,392.68
  5. Step 5: Solve for x
    x = 899,051,392.68/34,693.70
  6. Step 6: Final answer
    x = 25,913.97

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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.