Home / 15,914.29-21,969.93-11,219.53

Finding the Fourth Proportional to 15,914.29, 21,969.93 and 11,219.53

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Solution

The fourth proportional to 15,914.29, 21,969.93 and 11,219.53 is: 15,488.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,914.29 : 21,969.93 = 11,219.53 : x
  2. Step 2: Convert to fraction form
    15,914.29/21,969.93 = 11,219.53/x
  3. Step 3: Cross multiply
    15,914.29x = 21,969.93 × 11,219.53
  4. Step 4: Simplify right side
    15,914.29x = 246,492,288.73
  5. Step 5: Solve for x
    x = 246,492,288.73/15,914.29
  6. Step 6: Final answer
    x = 15,488.74

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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.