Home / 15,934.09-21,989.07-8,860.45

Finding the Fourth Proportional to 15,934.09, 21,989.07 and 8,860.45

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Solution

The fourth proportional to 15,934.09, 21,989.07 and 8,860.45 is: 12,227.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,934.09 : 21,989.07 = 8,860.45 : x
  2. Step 2: Convert to fraction form
    15,934.09/21,989.07 = 8,860.45/x
  3. Step 3: Cross multiply
    15,934.09x = 21,989.07 × 8,860.45
  4. Step 4: Simplify right side
    15,934.09x = 194,833,055.28
  5. Step 5: Solve for x
    x = 194,833,055.28/15,934.09
  6. Step 6: Final answer
    x = 12,227.44

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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.