Home / 20,156.43-30,240.09-7,009.53

Finding the Fourth Proportional to 20,156.43, 30,240.09 and 7,009.53

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Solution

The fourth proportional to 20,156.43, 30,240.09 and 7,009.53 is: 10,516.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,156.43 : 30,240.09 = 7,009.53 : x
  2. Step 2: Convert to fraction form
    20,156.43/30,240.09 = 7,009.53/x
  3. Step 3: Cross multiply
    20,156.43x = 30,240.09 × 7,009.53
  4. Step 4: Simplify right side
    20,156.43x = 211,968,818.06
  5. Step 5: Solve for x
    x = 211,968,818.06/20,156.43
  6. Step 6: Final answer
    x = 10,516.19

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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.