Home / 20,148.81-30,212.78-9,045.94

Finding the Fourth Proportional to 20,148.81, 30,212.78 and 9,045.94

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Solution

The fourth proportional to 20,148.81, 30,212.78 and 9,045.94 is: 13,564.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,148.81 : 30,212.78 = 9,045.94 : x
  2. Step 2: Convert to fraction form
    20,148.81/30,212.78 = 9,045.94/x
  3. Step 3: Cross multiply
    20,148.81x = 30,212.78 × 9,045.94
  4. Step 4: Simplify right side
    20,148.81x = 273,302,995.11
  5. Step 5: Solve for x
    x = 273,302,995.11/20,148.81
  6. Step 6: Final answer
    x = 13,564.23

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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.