Home / 11,291.46-15,582.80-6,815.15

Finding the Fourth Proportional to 11,291.46, 15,582.80 and 6,815.15

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Solution

The fourth proportional to 11,291.46, 15,582.80 and 6,815.15 is: 9,405.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,291.46 : 15,582.80 = 6,815.15 : x
  2. Step 2: Convert to fraction form
    11,291.46/15,582.80 = 6,815.15/x
  3. Step 3: Cross multiply
    11,291.46x = 15,582.80 × 6,815.15
  4. Step 4: Simplify right side
    11,291.46x = 106,199,085.34
  5. Step 5: Solve for x
    x = 106,199,085.34/11,291.46
  6. Step 6: Final answer
    x = 9,405.26

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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.