Home / 11,152.31-15,390.48-6,306.65

Finding the Fourth Proportional to 11,152.31, 15,390.48 and 6,306.65

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Solution

The fourth proportional to 11,152.31, 15,390.48 and 6,306.65 is: 8,703.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,152.31 : 15,390.48 = 6,306.65 : x
  2. Step 2: Convert to fraction form
    11,152.31/15,390.48 = 6,306.65/x
  3. Step 3: Cross multiply
    11,152.31x = 15,390.48 × 6,306.65
  4. Step 4: Simplify right side
    11,152.31x = 97,062,370.69
  5. Step 5: Solve for x
    x = 97,062,370.69/11,152.31
  6. Step 6: Final answer
    x = 8,703.34

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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.