Home / 10,678.72-15,995.75-8,587.41

Finding the Fourth Proportional to 10,678.72, 15,995.75 and 8,587.41

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Solution

The fourth proportional to 10,678.72, 15,995.75 and 8,587.41 is: 12,863.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,678.72 : 15,995.75 = 8,587.41 : x
  2. Step 2: Convert to fraction form
    10,678.72/15,995.75 = 8,587.41/x
  3. Step 3: Cross multiply
    10,678.72x = 15,995.75 × 8,587.41
  4. Step 4: Simplify right side
    10,678.72x = 137,362,063.51
  5. Step 5: Solve for x
    x = 137,362,063.51/10,678.72
  6. Step 6: Final answer
    x = 12,863.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.