Home / 10,518.54-15,775.56-3,945.20

Finding the Fourth Proportional to 10,518.54, 15,775.56 and 3,945.20

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Solution

The fourth proportional to 10,518.54, 15,775.56 and 3,945.20 is: 5,916.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,518.54 : 15,775.56 = 3,945.20 : x
  2. Step 2: Convert to fraction form
    10,518.54/15,775.56 = 3,945.20/x
  3. Step 3: Cross multiply
    10,518.54x = 15,775.56 × 3,945.20
  4. Step 4: Simplify right side
    10,518.54x = 62,237,739.31
  5. Step 5: Solve for x
    x = 62,237,739.31/10,518.54
  6. Step 6: Final answer
    x = 5,916.96

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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.