Home / 11,310.08-15,590.40-9,210.56

Finding the Fourth Proportional to 11,310.08, 15,590.40 and 9,210.56

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Solution

The fourth proportional to 11,310.08, 15,590.40 and 9,210.56 is: 12,696.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,310.08 : 15,590.40 = 9,210.56 : x
  2. Step 2: Convert to fraction form
    11,310.08/15,590.40 = 9,210.56/x
  3. Step 3: Cross multiply
    11,310.08x = 15,590.40 × 9,210.56
  4. Step 4: Simplify right side
    11,310.08x = 143,596,314.62
  5. Step 5: Solve for x
    x = 143,596,314.62/11,310.08
  6. Step 6: Final answer
    x = 12,696.31

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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.