Home / 15,321.06-21,127.42-14,428.12

Finding the Fourth Proportional to 15,321.06, 21,127.42 and 14,428.12

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Solution

The fourth proportional to 15,321.06, 21,127.42 and 14,428.12 is: 19,896.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,321.06 : 21,127.42 = 14,428.12 : x
  2. Step 2: Convert to fraction form
    15,321.06/21,127.42 = 14,428.12/x
  3. Step 3: Cross multiply
    15,321.06x = 21,127.42 × 14,428.12
  4. Step 4: Simplify right side
    15,321.06x = 304,828,951.05
  5. Step 5: Solve for x
    x = 304,828,951.05/15,321.06
  6. Step 6: Final answer
    x = 19,896.07

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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.