Home / 13,903.76-19,187.20-7,530.36

Finding the Fourth Proportional to 13,903.76, 19,187.20 and 7,530.36

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Solution

The fourth proportional to 13,903.76, 19,187.20 and 7,530.36 is: 10,391.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,903.76 : 19,187.20 = 7,530.36 : x
  2. Step 2: Convert to fraction form
    13,903.76/19,187.20 = 7,530.36/x
  3. Step 3: Cross multiply
    13,903.76x = 19,187.20 × 7,530.36
  4. Step 4: Simplify right side
    13,903.76x = 144,486,523.39
  5. Step 5: Solve for x
    x = 144,486,523.39/13,903.76
  6. Step 6: Final answer
    x = 10,391.90

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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.