Home / 15,814.65-21,824.25-9,100.15

Finding the Fourth Proportional to 15,814.65, 21,824.25 and 9,100.15

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Solution

The fourth proportional to 15,814.65, 21,824.25 and 9,100.15 is: 12,558.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,814.65 : 21,824.25 = 9,100.15 : x
  2. Step 2: Convert to fraction form
    15,814.65/21,824.25 = 9,100.15/x
  3. Step 3: Cross multiply
    15,814.65x = 21,824.25 × 9,100.15
  4. Step 4: Simplify right side
    15,814.65x = 198,603,859.95
  5. Step 5: Solve for x
    x = 198,603,859.95/15,814.65
  6. Step 6: Final answer
    x = 12,558.22

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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.