Home / 20,130.39-30,189.51-8,441.01

Finding the Fourth Proportional to 20,130.39, 30,189.51 and 8,441.01

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Solution

The fourth proportional to 20,130.39, 30,189.51 and 8,441.01 is: 12,658.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,130.39 : 30,189.51 = 8,441.01 : x
  2. Step 2: Convert to fraction form
    20,130.39/30,189.51 = 8,441.01/x
  3. Step 3: Cross multiply
    20,130.39x = 30,189.51 × 8,441.01
  4. Step 4: Simplify right side
    20,130.39x = 254,829,955.81
  5. Step 5: Solve for x
    x = 254,829,955.81/20,130.39
  6. Step 6: Final answer
    x = 12,658.97

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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.