Home / 11,215.90-16,823.85-10,102.30

Finding the Fourth Proportional to 11,215.90, 16,823.85 and 10,102.30

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Solution

The fourth proportional to 11,215.90, 16,823.85 and 10,102.30 is: 15,153.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,215.90 : 16,823.85 = 10,102.30 : x
  2. Step 2: Convert to fraction form
    11,215.90/16,823.85 = 10,102.30/x
  3. Step 3: Cross multiply
    11,215.90x = 16,823.85 × 10,102.30
  4. Step 4: Simplify right side
    11,215.90x = 169,959,579.86
  5. Step 5: Solve for x
    x = 169,959,579.86/11,215.90
  6. Step 6: Final answer
    x = 15,153.45

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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.