Home / 11,312.08-15,613.64-6,345.68

Finding the Fourth Proportional to 11,312.08, 15,613.64 and 6,345.68

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Solution

The fourth proportional to 11,312.08, 15,613.64 and 6,345.68 is: 8,758.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,312.08 : 15,613.64 = 6,345.68 : x
  2. Step 2: Convert to fraction form
    11,312.08/15,613.64 = 6,345.68/x
  3. Step 3: Cross multiply
    11,312.08x = 15,613.64 × 6,345.68
  4. Step 4: Simplify right side
    11,312.08x = 99,079,163.08
  5. Step 5: Solve for x
    x = 99,079,163.08/11,312.08
  6. Step 6: Final answer
    x = 8,758.70

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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.