Home / 13,865.87-19,136.90-7,898.11

Finding the Fourth Proportional to 13,865.87, 19,136.90 and 7,898.11

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Solution

The fourth proportional to 13,865.87, 19,136.90 and 7,898.11 is: 10,900.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,865.87 : 19,136.90 = 7,898.11 : x
  2. Step 2: Convert to fraction form
    13,865.87/19,136.90 = 7,898.11/x
  3. Step 3: Cross multiply
    13,865.87x = 19,136.90 × 7,898.11
  4. Step 4: Simplify right side
    13,865.87x = 151,145,313.16
  5. Step 5: Solve for x
    x = 151,145,313.16/13,865.87
  6. Step 6: Final answer
    x = 10,900.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.