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Finding the Fourth Proportional to 20,619, 30,903.14 and 9,510.26

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Solution

The fourth proportional to 20,619, 30,903.14 and 9,510.26 is: 14,253.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,619 : 30,903.14 = 9,510.26 : x
  2. Step 2: Convert to fraction form
    20,619/30,903.14 = 9,510.26/x
  3. Step 3: Cross multiply
    20,619x = 30,903.14 × 9,510.26
  4. Step 4: Simplify right side
    20,619x = 293,896,896.22
  5. Step 5: Solve for x
    x = 293,896,896.22/20,619
  6. Step 6: Final answer
    x = 14,253.69

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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.