Home / 13,485.71-20,227.68-6,470.70

Finding the Fourth Proportional to 13,485.71, 20,227.68 and 6,470.70

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Solution

The fourth proportional to 13,485.71, 20,227.68 and 6,470.70 is: 9,705.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,485.71 : 20,227.68 = 6,470.70 : x
  2. Step 2: Convert to fraction form
    13,485.71/20,227.68 = 6,470.70/x
  3. Step 3: Cross multiply
    13,485.71x = 20,227.68 × 6,470.70
  4. Step 4: Simplify right side
    13,485.71x = 130,887,248.98
  5. Step 5: Solve for x
    x = 130,887,248.98/13,485.71
  6. Step 6: Final answer
    x = 9,705.63

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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.