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Finding the Fourth Proportional to 13,340, 18,410.28 and 7,752.08

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Solution

The fourth proportional to 13,340, 18,410.28 and 7,752.08 is: 10,698.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,340 : 18,410.28 = 7,752.08 : x
  2. Step 2: Convert to fraction form
    13,340/18,410.28 = 7,752.08/x
  3. Step 3: Cross multiply
    13,340x = 18,410.28 × 7,752.08
  4. Step 4: Simplify right side
    13,340x = 142,717,963.38
  5. Step 5: Solve for x
    x = 142,717,963.38/13,340
  6. Step 6: Final answer
    x = 10,698.50

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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.