Home / 21,039.54-31,529.23-15,449.02

Finding the Fourth Proportional to 21,039.54, 31,529.23 and 15,449.02

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Solution

The fourth proportional to 21,039.54, 31,529.23 and 15,449.02 is: 23,151.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,039.54 : 31,529.23 = 15,449.02 : x
  2. Step 2: Convert to fraction form
    21,039.54/31,529.23 = 15,449.02/x
  3. Step 3: Cross multiply
    21,039.54x = 31,529.23 × 15,449.02
  4. Step 4: Simplify right side
    21,039.54x = 487,095,547.21
  5. Step 5: Solve for x
    x = 487,095,547.21/21,039.54
  6. Step 6: Final answer
    x = 23,151.44

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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.