Home / 13,888.76-19,166.60-7,601.28

Finding the Fourth Proportional to 13,888.76, 19,166.60 and 7,601.28

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Solution

The fourth proportional to 13,888.76, 19,166.60 and 7,601.28 is: 10,489.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,888.76 : 19,166.60 = 7,601.28 : x
  2. Step 2: Convert to fraction form
    13,888.76/19,166.60 = 7,601.28/x
  3. Step 3: Cross multiply
    13,888.76x = 19,166.60 × 7,601.28
  4. Step 4: Simplify right side
    13,888.76x = 145,690,693.25
  5. Step 5: Solve for x
    x = 145,690,693.25/13,888.76
  6. Step 6: Final answer
    x = 10,489.83

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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.