Home / 20,475.21-30,717.68-10,619.13

Finding the Fourth Proportional to 20,475.21, 30,717.68 and 10,619.13

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Solution

The fourth proportional to 20,475.21, 30,717.68 and 10,619.13 is: 15,931.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,475.21 : 30,717.68 = 10,619.13 : x
  2. Step 2: Convert to fraction form
    20,475.21/30,717.68 = 10,619.13/x
  3. Step 3: Cross multiply
    20,475.21x = 30,717.68 × 10,619.13
  4. Step 4: Simplify right side
    20,475.21x = 326,194,984.12
  5. Step 5: Solve for x
    x = 326,194,984.12/20,475.21
  6. Step 6: Final answer
    x = 15,931.22

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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.