Home / 15,329.66-21,142.78-9,946.22

Finding the Fourth Proportional to 15,329.66, 21,142.78 and 9,946.22

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Solution

The fourth proportional to 15,329.66, 21,142.78 and 9,946.22 is: 13,717.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,329.66 : 21,142.78 = 9,946.22 : x
  2. Step 2: Convert to fraction form
    15,329.66/21,142.78 = 9,946.22/x
  3. Step 3: Cross multiply
    15,329.66x = 21,142.78 × 9,946.22
  4. Step 4: Simplify right side
    15,329.66x = 210,290,610.71
  5. Step 5: Solve for x
    x = 210,290,610.71/15,329.66
  6. Step 6: Final answer
    x = 13,717.90

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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.