Home / 13,649.12-18,836.52-7,681.04

Finding the Fourth Proportional to 13,649.12, 18,836.52 and 7,681.04

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Solution

The fourth proportional to 13,649.12, 18,836.52 and 7,681.04 is: 10,600.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,649.12 : 18,836.52 = 7,681.04 : x
  2. Step 2: Convert to fraction form
    13,649.12/18,836.52 = 7,681.04/x
  3. Step 3: Cross multiply
    13,649.12x = 18,836.52 × 7,681.04
  4. Step 4: Simplify right side
    13,649.12x = 144,684,063.58
  5. Step 5: Solve for x
    x = 144,684,063.58/13,649.12
  6. Step 6: Final answer
    x = 10,600.25

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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.