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Finding the Fourth Proportional to 15,210.19, 20,986.48 and 9,241.50

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Solution

The fourth proportional to 15,210.19, 20,986.48 and 9,241.50 is: 12,751.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,210.19 : 20,986.48 = 9,241.50 : x
  2. Step 2: Convert to fraction form
    15,210.19/20,986.48 = 9,241.50/x
  3. Step 3: Cross multiply
    15,210.19x = 20,986.48 × 9,241.50
  4. Step 4: Simplify right side
    15,210.19x = 193,946,554.92
  5. Step 5: Solve for x
    x = 193,946,554.92/15,210.19
  6. Step 6: Final answer
    x = 12,751.09

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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.