Home / 20,426.81-30,636.55-5,434.01

Finding the Fourth Proportional to 20,426.81, 30,636.55 and 5,434.01

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Solution

The fourth proportional to 20,426.81, 30,636.55 and 5,434.01 is: 8,150.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,426.81 : 30,636.55 = 5,434.01 : x
  2. Step 2: Convert to fraction form
    20,426.81/30,636.55 = 5,434.01/x
  3. Step 3: Cross multiply
    20,426.81x = 30,636.55 × 5,434.01
  4. Step 4: Simplify right side
    20,426.81x = 166,479,152.30
  5. Step 5: Solve for x
    x = 166,479,152.30/20,426.81
  6. Step 6: Final answer
    x = 8,150.03

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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.