Home / 28,504.64-39,338.24-15,929.44

Finding the Fourth Proportional to 28,504.64, 39,338.24 and 15,929.44

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Solution

The fourth proportional to 28,504.64, 39,338.24 and 15,929.44 is: 21,983.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,504.64 : 39,338.24 = 15,929.44 : x
  2. Step 2: Convert to fraction form
    28,504.64/39,338.24 = 15,929.44/x
  3. Step 3: Cross multiply
    28,504.64x = 39,338.24 × 15,929.44
  4. Step 4: Simplify right side
    28,504.64x = 626,636,133.79
  5. Step 5: Solve for x
    x = 626,636,133.79/28,504.64
  6. Step 6: Final answer
    x = 21,983.65

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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.