Home / 12,900.58-19,350.15-5,110.18

Finding the Fourth Proportional to 12,900.58, 19,350.15 and 5,110.18

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Solution

The fourth proportional to 12,900.58, 19,350.15 and 5,110.18 is: 7,664.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,900.58 : 19,350.15 = 5,110.18 : x
  2. Step 2: Convert to fraction form
    12,900.58/19,350.15 = 5,110.18/x
  3. Step 3: Cross multiply
    12,900.58x = 19,350.15 × 5,110.18
  4. Step 4: Simplify right side
    12,900.58x = 98,882,749.53
  5. Step 5: Solve for x
    x = 98,882,749.53/12,900.58
  6. Step 6: Final answer
    x = 7,664.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.