Home / 13,377.58-18,459.57-7,407.75

Finding the Fourth Proportional to 13,377.58, 18,459.57 and 7,407.75

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Solution

The fourth proportional to 13,377.58, 18,459.57 and 7,407.75 is: 10,221.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,377.58 : 18,459.57 = 7,407.75 : x
  2. Step 2: Convert to fraction form
    13,377.58/18,459.57 = 7,407.75/x
  3. Step 3: Cross multiply
    13,377.58x = 18,459.57 × 7,407.75
  4. Step 4: Simplify right side
    13,377.58x = 136,743,955.84
  5. Step 5: Solve for x
    x = 136,743,955.84/13,377.58
  6. Step 6: Final answer
    x = 10,221.88

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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.