Home / 20,173.60-27,840.18-11,222.20

Finding the Fourth Proportional to 20,173.60, 27,840.18 and 11,222.20

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Solution

The fourth proportional to 20,173.60, 27,840.18 and 11,222.20 is: 15,486.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,173.60 : 27,840.18 = 11,222.20 : x
  2. Step 2: Convert to fraction form
    20,173.60/27,840.18 = 11,222.20/x
  3. Step 3: Cross multiply
    20,173.60x = 27,840.18 × 11,222.20
  4. Step 4: Simplify right side
    20,173.60x = 312,428,068.00
  5. Step 5: Solve for x
    x = 312,428,068.00/20,173.60
  6. Step 6: Final answer
    x = 15,486.98

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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.