Home / 13,470.19-20,209.48-6,900.99

Finding the Fourth Proportional to 13,470.19, 20,209.48 and 6,900.99

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Solution

The fourth proportional to 13,470.19, 20,209.48 and 6,900.99 is: 10,353.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,470.19 : 20,209.48 = 6,900.99 : x
  2. Step 2: Convert to fraction form
    13,470.19/20,209.48 = 6,900.99/x
  3. Step 3: Cross multiply
    13,470.19x = 20,209.48 × 6,900.99
  4. Step 4: Simplify right side
    13,470.19x = 139,465,419.39
  5. Step 5: Solve for x
    x = 139,465,419.39/13,470.19
  6. Step 6: Final answer
    x = 10,353.63

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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.