Home / 20,211.61-27,892.86-11,259.11

Finding the Fourth Proportional to 20,211.61, 27,892.86 and 11,259.11

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Solution

The fourth proportional to 20,211.61, 27,892.86 and 11,259.11 is: 15,538.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,211.61 : 27,892.86 = 11,259.11 : x
  2. Step 2: Convert to fraction form
    20,211.61/27,892.86 = 11,259.11/x
  3. Step 3: Cross multiply
    20,211.61x = 27,892.86 × 11,259.11
  4. Step 4: Simplify right side
    20,211.61x = 314,048,583.19
  5. Step 5: Solve for x
    x = 314,048,583.19/20,211.61
  6. Step 6: Final answer
    x = 15,538.03

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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.