Home / 11,435.18-15,782.60-7,456.20

Finding the Fourth Proportional to 11,435.18, 15,782.60 and 7,456.20

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Solution

The fourth proportional to 11,435.18, 15,782.60 and 7,456.20 is: 10,290.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,435.18 : 15,782.60 = 7,456.20 : x
  2. Step 2: Convert to fraction form
    11,435.18/15,782.60 = 7,456.20/x
  3. Step 3: Cross multiply
    11,435.18x = 15,782.60 × 7,456.20
  4. Step 4: Simplify right side
    11,435.18x = 117,678,228.41
  5. Step 5: Solve for x
    x = 117,678,228.41/11,435.18
  6. Step 6: Final answer
    x = 10,290.90

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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.