Home / 20,470.05-30,681.72-9,950.22

Finding the Fourth Proportional to 20,470.05, 30,681.72 and 9,950.22

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Solution

The fourth proportional to 20,470.05, 30,681.72 and 9,950.22 is: 14,913.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,470.05 : 30,681.72 = 9,950.22 : x
  2. Step 2: Convert to fraction form
    20,470.05/30,681.72 = 9,950.22/x
  3. Step 3: Cross multiply
    20,470.05x = 30,681.72 × 9,950.22
  4. Step 4: Simplify right side
    20,470.05x = 305,289,863.98
  5. Step 5: Solve for x
    x = 305,289,863.98/20,470.05
  6. Step 6: Final answer
    x = 14,913.98

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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.