Home / 19,289.40-28,904.16-13,377.81

Finding the Fourth Proportional to 19,289.40, 28,904.16 and 13,377.81

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Solution

The fourth proportional to 19,289.40, 28,904.16 and 13,377.81 is: 20,045.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,289.40 : 28,904.16 = 13,377.81 : x
  2. Step 2: Convert to fraction form
    19,289.40/28,904.16 = 13,377.81/x
  3. Step 3: Cross multiply
    19,289.40x = 28,904.16 × 13,377.81
  4. Step 4: Simplify right side
    19,289.40x = 386,674,360.69
  5. Step 5: Solve for x
    x = 386,674,360.69/19,289.40
  6. Step 6: Final answer
    x = 20,045.95

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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.