Home / 10,516.43-15,778.06-7,020.65

Finding the Fourth Proportional to 10,516.43, 15,778.06 and 7,020.65

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Solution

The fourth proportional to 10,516.43, 15,778.06 and 7,020.65 is: 10,533.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,516.43 : 15,778.06 = 7,020.65 : x
  2. Step 2: Convert to fraction form
    10,516.43/15,778.06 = 7,020.65/x
  3. Step 3: Cross multiply
    10,516.43x = 15,778.06 × 7,020.65
  4. Step 4: Simplify right side
    10,516.43x = 110,772,236.94
  5. Step 5: Solve for x
    x = 110,772,236.94/10,516.43
  6. Step 6: Final answer
    x = 10,533.25

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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.