Home / 21,035.20-31,495.20-16,427.20

Finding the Fourth Proportional to 21,035.20, 31,495.20 and 16,427.20

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Solution

The fourth proportional to 21,035.20, 31,495.20 and 16,427.20 is: 24,595.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,035.20 : 31,495.20 = 16,427.20 : x
  2. Step 2: Convert to fraction form
    21,035.20/31,495.20 = 16,427.20/x
  3. Step 3: Cross multiply
    21,035.20x = 31,495.20 × 16,427.20
  4. Step 4: Simplify right side
    21,035.20x = 517,377,949.44
  5. Step 5: Solve for x
    x = 517,377,949.44/21,035.20
  6. Step 6: Final answer
    x = 24,595.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.