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Finding the Fourth Proportional to 13,279.05, 19,920.02 and 4,963.05

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Solution

The fourth proportional to 13,279.05, 19,920.02 and 4,963.05 is: 7,445.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,279.05 : 19,920.02 = 4,963.05 : x
  2. Step 2: Convert to fraction form
    13,279.05/19,920.02 = 4,963.05/x
  3. Step 3: Cross multiply
    13,279.05x = 19,920.02 × 4,963.05
  4. Step 4: Simplify right side
    13,279.05x = 98,864,030.45
  5. Step 5: Solve for x
    x = 98,864,030.45/13,279.05
  6. Step 6: Final answer
    x = 7,445.11

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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.