Home / 20,223.61-27,909.45-11,271.11

Finding the Fourth Proportional to 20,223.61, 27,909.45 and 11,271.11

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Solution

The fourth proportional to 20,223.61, 27,909.45 and 11,271.11 is: 15,554.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,223.61 : 27,909.45 = 11,271.11 : x
  2. Step 2: Convert to fraction form
    20,223.61/27,909.45 = 11,271.11/x
  3. Step 3: Cross multiply
    20,223.61x = 27,909.45 × 11,271.11
  4. Step 4: Simplify right side
    20,223.61x = 314,570,508.35
  5. Step 5: Solve for x
    x = 314,570,508.35/20,223.61
  6. Step 6: Final answer
    x = 15,554.62

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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.