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Finding the Fourth Proportional to 15,218.74, 22,828.10 and 9,986.84

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Solution

The fourth proportional to 15,218.74, 22,828.10 and 9,986.84 is: 14,980.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,218.74 : 22,828.10 = 9,986.84 : x
  2. Step 2: Convert to fraction form
    15,218.74/22,828.10 = 9,986.84/x
  3. Step 3: Cross multiply
    15,218.74x = 22,828.10 × 9,986.84
  4. Step 4: Simplify right side
    15,218.74x = 227,980,716.41
  5. Step 5: Solve for x
    x = 227,980,716.41/15,218.74
  6. Step 6: Final answer
    x = 14,980.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.