Home / 20,543,946.88-28,350,621.12-11,376,578.56

Finding the Fourth Proportional to 20,543,946.88, 28,350,621.12 and 11,376,578.56

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Solution

The fourth proportional to 20,543,946.88, 28,350,621.12 and 11,376,578.56 is: 15,699,664.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,543,946.88 : 28,350,621.12 = 11,376,578.56 : x
  2. Step 2: Convert to fraction form
    20,543,946.88/28,350,621.12 = 11,376,578.56/x
  3. Step 3: Cross multiply
    20,543,946.88x = 28,350,621.12 × 11,376,578.56
  4. Step 4: Simplify right side
    20,543,946.88x = 322,533,068,396,475.19
  5. Step 5: Solve for x
    x = 322,533,068,396,475.19/20,543,946.88
  6. Step 6: Final answer
    x = 15,699,664.25

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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.