Home / 18,728,616.15-28,092,960.35-7,219,503.19

Finding the Fourth Proportional to 18,728,616.15, 28,092,960.35 and 7,219,503.19

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Solution

The fourth proportional to 18,728,616.15, 28,092,960.35 and 7,219,503.19 is: 10,829,268.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,728,616.15 : 28,092,960.35 = 7,219,503.19 : x
  2. Step 2: Convert to fraction form
    18,728,616.15/28,092,960.35 = 7,219,503.19/x
  3. Step 3: Cross multiply
    18,728,616.15x = 28,092,960.35 × 7,219,503.19
  4. Step 4: Simplify right side
    18,728,616.15x = 202,817,216,863,368.53
  5. Step 5: Solve for x
    x = 202,817,216,863,368.53/18,728,616.15
  6. Step 6: Final answer
    x = 10,829,268.71

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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.