Home / 28,166.60-42,247.70-7,389.56

Finding the Fourth Proportional to 28,166.60, 42,247.70 and 7,389.56

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Solution

The fourth proportional to 28,166.60, 42,247.70 and 7,389.56 is: 11,083.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,166.60 : 42,247.70 = 7,389.56 : x
  2. Step 2: Convert to fraction form
    28,166.60/42,247.70 = 7,389.56/x
  3. Step 3: Cross multiply
    28,166.60x = 42,247.70 × 7,389.56
  4. Step 4: Simplify right side
    28,166.60x = 312,191,914.01
  5. Step 5: Solve for x
    x = 312,191,914.01/28,166.60
  6. Step 6: Final answer
    x = 11,083.76

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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.