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Finding the Fourth Proportional to 13,649.58, 18,834.87 and 7,681.10

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Solution

The fourth proportional to 13,649.58, 18,834.87 and 7,681.10 is: 10,599.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,649.58 : 18,834.87 = 7,681.10 : x
  2. Step 2: Convert to fraction form
    13,649.58/18,834.87 = 7,681.10/x
  3. Step 3: Cross multiply
    13,649.58x = 18,834.87 × 7,681.10
  4. Step 4: Simplify right side
    13,649.58x = 144,672,454.59
  5. Step 5: Solve for x
    x = 144,672,454.59/13,649.58
  6. Step 6: Final answer
    x = 10,599.04

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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.