Home / 15,578.04-21,491.82-9,992.28

Finding the Fourth Proportional to 15,578.04, 21,491.82 and 9,992.28

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Solution

The fourth proportional to 15,578.04, 21,491.82 and 9,992.28 is: 13,785.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,578.04 : 21,491.82 = 9,992.28 : x
  2. Step 2: Convert to fraction form
    15,578.04/21,491.82 = 9,992.28/x
  3. Step 3: Cross multiply
    15,578.04x = 21,491.82 × 9,992.28
  4. Step 4: Simplify right side
    15,578.04x = 214,752,283.15
  5. Step 5: Solve for x
    x = 214,752,283.15/15,578.04
  6. Step 6: Final answer
    x = 13,785.58

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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.