Home / 20,267.10-27,968.15-11,315.45

Finding the Fourth Proportional to 20,267.10, 27,968.15 and 11,315.45

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Solution

The fourth proportional to 20,267.10, 27,968.15 and 11,315.45 is: 15,615.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,267.10 : 27,968.15 = 11,315.45 : x
  2. Step 2: Convert to fraction form
    20,267.10/27,968.15 = 11,315.45/x
  3. Step 3: Cross multiply
    20,267.10x = 27,968.15 × 11,315.45
  4. Step 4: Simplify right side
    20,267.10x = 316,472,006.50
  5. Step 5: Solve for x
    x = 316,472,006.50/20,267.10
  6. Step 6: Final answer
    x = 15,615.06

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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.