Home / 20,281.36-30,422.25-7,133.65

Finding the Fourth Proportional to 20,281.36, 30,422.25 and 7,133.65

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Solution

The fourth proportional to 20,281.36, 30,422.25 and 7,133.65 is: 10,700.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,281.36 : 30,422.25 = 7,133.65 : x
  2. Step 2: Convert to fraction form
    20,281.36/30,422.25 = 7,133.65/x
  3. Step 3: Cross multiply
    20,281.36x = 30,422.25 × 7,133.65
  4. Step 4: Simplify right side
    20,281.36x = 217,021,683.71
  5. Step 5: Solve for x
    x = 217,021,683.71/20,281.36
  6. Step 6: Final answer
    x = 10,700.55

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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.