Home / 15,371.82-21,219.08-12,015.74

Finding the Fourth Proportional to 15,371.82, 21,219.08 and 12,015.74

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Solution

The fourth proportional to 15,371.82, 21,219.08 and 12,015.74 is: 16,586.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,371.82 : 21,219.08 = 12,015.74 : x
  2. Step 2: Convert to fraction form
    15,371.82/21,219.08 = 12,015.74/x
  3. Step 3: Cross multiply
    15,371.82x = 21,219.08 × 12,015.74
  4. Step 4: Simplify right side
    15,371.82x = 254,962,948.32
  5. Step 5: Solve for x
    x = 254,962,948.32/15,371.82
  6. Step 6: Final answer
    x = 16,586.39

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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.