Home / 15,329.33-21,156.44-9,359.74

Finding the Fourth Proportional to 15,329.33, 21,156.44 and 9,359.74

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Solution

The fourth proportional to 15,329.33, 21,156.44 and 9,359.74 is: 12,917.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,329.33 : 21,156.44 = 9,359.74 : x
  2. Step 2: Convert to fraction form
    15,329.33/21,156.44 = 9,359.74/x
  3. Step 3: Cross multiply
    15,329.33x = 21,156.44 × 9,359.74
  4. Step 4: Simplify right side
    15,329.33x = 198,018,678.04
  5. Step 5: Solve for x
    x = 198,018,678.04/15,329.33
  6. Step 6: Final answer
    x = 12,917.63

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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.