Home / 11,105.64-15,319.08-7,328.82

Finding the Fourth Proportional to 11,105.64, 15,319.08 and 7,328.82

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Solution

The fourth proportional to 11,105.64, 15,319.08 and 7,328.82 is: 10,109.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,105.64 : 15,319.08 = 7,328.82 : x
  2. Step 2: Convert to fraction form
    11,105.64/15,319.08 = 7,328.82/x
  3. Step 3: Cross multiply
    11,105.64x = 15,319.08 × 7,328.82
  4. Step 4: Simplify right side
    11,105.64x = 112,270,779.89
  5. Step 5: Solve for x
    x = 112,270,779.89/11,105.64
  6. Step 6: Final answer
    x = 10,109.35

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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.