Home / 13,649.56-18,836.40-7,681.48

Finding the Fourth Proportional to 13,649.56, 18,836.40 and 7,681.48

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Solution

The fourth proportional to 13,649.56, 18,836.40 and 7,681.48 is: 10,600.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,649.56 : 18,836.40 = 7,681.48 : x
  2. Step 2: Convert to fraction form
    13,649.56/18,836.40 = 7,681.48/x
  3. Step 3: Cross multiply
    13,649.56x = 18,836.40 × 7,681.48
  4. Step 4: Simplify right side
    13,649.56x = 144,691,429.87
  5. Step 5: Solve for x
    x = 144,691,429.87/13,649.56
  6. Step 6: Final answer
    x = 10,600.45

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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.