Home / 20,812,111.25-28,721,482.50-11,393,562.47

Finding the Fourth Proportional to 20,812,111.25, 28,721,482.50 and 11,393,562.47

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Solution

The fourth proportional to 20,812,111.25, 28,721,482.50 and 11,393,562.47 is: 15,723,537.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,812,111.25 : 28,721,482.50 = 11,393,562.47 : x
  2. Step 2: Convert to fraction form
    20,812,111.25/28,721,482.50 = 11,393,562.47/x
  3. Step 3: Cross multiply
    20,812,111.25x = 28,721,482.50 × 11,393,562.47
  4. Step 4: Simplify right side
    20,812,111.25x = 327,240,004,993,880.25
  5. Step 5: Solve for x
    x = 327,240,004,993,880.25/20,812,111.25
  6. Step 6: Final answer
    x = 15,723,537.18

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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.