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Finding the Fourth Proportional to 13,001.76, 19,495.29 and 7,738.38

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Solution

The fourth proportional to 13,001.76, 19,495.29 and 7,738.38 is: 11,603.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,001.76 : 19,495.29 = 7,738.38 : x
  2. Step 2: Convert to fraction form
    13,001.76/19,495.29 = 7,738.38/x
  3. Step 3: Cross multiply
    13,001.76x = 19,495.29 × 7,738.38
  4. Step 4: Simplify right side
    13,001.76x = 150,861,962.23
  5. Step 5: Solve for x
    x = 150,861,962.23/13,001.76
  6. Step 6: Final answer
    x = 11,603.20

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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.