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Finding the Fourth Proportional to 13,470.74, 20,210.11 and 6,901.54

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Solution

The fourth proportional to 13,470.74, 20,210.11 and 6,901.54 is: 10,354.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,470.74 : 20,210.11 = 6,901.54 : x
  2. Step 2: Convert to fraction form
    13,470.74/20,210.11 = 6,901.54/x
  3. Step 3: Cross multiply
    13,470.74x = 20,210.11 × 6,901.54
  4. Step 4: Simplify right side
    13,470.74x = 139,480,814.79
  5. Step 5: Solve for x
    x = 139,480,814.79/13,470.74
  6. Step 6: Final answer
    x = 10,354.36

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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.