Home / 34,219.56-47,221.66-21,479.58

Finding the Fourth Proportional to 34,219.56, 47,221.66 and 21,479.58

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Solution

The fourth proportional to 34,219.56, 47,221.66 and 21,479.58 is: 29,640.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,219.56 : 47,221.66 = 21,479.58 : x
  2. Step 2: Convert to fraction form
    34,219.56/47,221.66 = 21,479.58/x
  3. Step 3: Cross multiply
    34,219.56x = 47,221.66 × 21,479.58
  4. Step 4: Simplify right side
    34,219.56x = 1,014,301,423.70
  5. Step 5: Solve for x
    x = 1,014,301,423.70/34,219.56
  6. Step 6: Final answer
    x = 29,640.98

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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.