Home / 13,128.14-19,691.81-7,564.25

Finding the Fourth Proportional to 13,128.14, 19,691.81 and 7,564.25

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Solution

The fourth proportional to 13,128.14, 19,691.81 and 7,564.25 is: 11,346.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,128.14 : 19,691.81 = 7,564.25 : x
  2. Step 2: Convert to fraction form
    13,128.14/19,691.81 = 7,564.25/x
  3. Step 3: Cross multiply
    13,128.14x = 19,691.81 × 7,564.25
  4. Step 4: Simplify right side
    13,128.14x = 148,953,813.57
  5. Step 5: Solve for x
    x = 148,953,813.57/13,128.14
  6. Step 6: Final answer
    x = 11,346.15

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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.