Home / 10,917.91-15,063.19-6,443.16

Finding the Fourth Proportional to 10,917.91, 15,063.19 and 6,443.16

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Solution

The fourth proportional to 10,917.91, 15,063.19 and 6,443.16 is: 8,889.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,917.91 : 15,063.19 = 6,443.16 : x
  2. Step 2: Convert to fraction form
    10,917.91/15,063.19 = 6,443.16/x
  3. Step 3: Cross multiply
    10,917.91x = 15,063.19 × 6,443.16
  4. Step 4: Simplify right side
    10,917.91x = 97,054,543.28
  5. Step 5: Solve for x
    x = 97,054,543.28/10,917.91
  6. Step 6: Final answer
    x = 8,889.48

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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.