Home / 20,139.42-30,206.81-5,349.53

Finding the Fourth Proportional to 20,139.42, 30,206.81 and 5,349.53

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Solution

The fourth proportional to 20,139.42, 30,206.81 and 5,349.53 is: 8,023.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,139.42 : 30,206.81 = 5,349.53 : x
  2. Step 2: Convert to fraction form
    20,139.42/30,206.81 = 5,349.53/x
  3. Step 3: Cross multiply
    20,139.42x = 30,206.81 × 5,349.53
  4. Step 4: Simplify right side
    20,139.42x = 161,592,325.19
  5. Step 5: Solve for x
    x = 161,592,325.19/20,139.42
  6. Step 6: Final answer
    x = 8,023.68

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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.