Home / 13,918.60-20,880.20-6,898.94

Finding the Fourth Proportional to 13,918.60, 20,880.20 and 6,898.94

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Solution

The fourth proportional to 13,918.60, 20,880.20 and 6,898.94 is: 10,349.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,918.60 : 20,880.20 = 6,898.94 : x
  2. Step 2: Convert to fraction form
    13,918.60/20,880.20 = 6,898.94/x
  3. Step 3: Cross multiply
    13,918.60x = 20,880.20 × 6,898.94
  4. Step 4: Simplify right side
    13,918.60x = 144,051,246.99
  5. Step 5: Solve for x
    x = 144,051,246.99/13,918.60
  6. Step 6: Final answer
    x = 10,349.55

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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.