Home / 10,020.91-15,034.81-4,478.08

Finding the Fourth Proportional to 10,020.91, 15,034.81 and 4,478.08

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Solution

The fourth proportional to 10,020.91, 15,034.81 and 4,478.08 is: 6,718.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,020.91 : 15,034.81 = 4,478.08 : x
  2. Step 2: Convert to fraction form
    10,020.91/15,034.81 = 4,478.08/x
  3. Step 3: Cross multiply
    10,020.91x = 15,034.81 × 4,478.08
  4. Step 4: Simplify right side
    10,020.91x = 67,327,081.96
  5. Step 5: Solve for x
    x = 67,327,081.96/10,020.91
  6. Step 6: Final answer
    x = 6,718.66

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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.