Home / 11,460.10-15,811.47-7,420.54

Finding the Fourth Proportional to 11,460.10, 15,811.47 and 7,420.54

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Solution

The fourth proportional to 11,460.10, 15,811.47 and 7,420.54 is: 10,238.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,460.10 : 15,811.47 = 7,420.54 : x
  2. Step 2: Convert to fraction form
    11,460.10/15,811.47 = 7,420.54/x
  3. Step 3: Cross multiply
    11,460.10x = 15,811.47 × 7,420.54
  4. Step 4: Simplify right side
    11,460.10x = 117,329,645.59
  5. Step 5: Solve for x
    x = 117,329,645.59/11,460.10
  6. Step 6: Final answer
    x = 10,238.10

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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.