Home / 18,427.60-27,620.70-7,331.28

Finding the Fourth Proportional to 18,427.60, 27,620.70 and 7,331.28

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Solution

The fourth proportional to 18,427.60, 27,620.70 and 7,331.28 is: 10,988.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,427.60 : 27,620.70 = 7,331.28 : x
  2. Step 2: Convert to fraction form
    18,427.60/27,620.70 = 7,331.28/x
  3. Step 3: Cross multiply
    18,427.60x = 27,620.70 × 7,331.28
  4. Step 4: Simplify right side
    18,427.60x = 202,495,085.50
  5. Step 5: Solve for x
    x = 202,495,085.50/18,427.60
  6. Step 6: Final answer
    x = 10,988.68

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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.