Home / 28,715.55-43,029.36-19,320.77

Finding the Fourth Proportional to 28,715.55, 43,029.36 and 19,320.77

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Solution

The fourth proportional to 28,715.55, 43,029.36 and 19,320.77 is: 28,951.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,715.55 : 43,029.36 = 19,320.77 : x
  2. Step 2: Convert to fraction form
    28,715.55/43,029.36 = 19,320.77/x
  3. Step 3: Cross multiply
    28,715.55x = 43,029.36 × 19,320.77
  4. Step 4: Simplify right side
    28,715.55x = 831,360,367.81
  5. Step 5: Solve for x
    x = 831,360,367.81/28,715.55
  6. Step 6: Final answer
    x = 28,951.57

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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.