Home / 20,809,156.31-28,716,424.18-11,516,744.42

Finding the Fourth Proportional to 20,809,156.31, 28,716,424.18 and 11,516,744.42

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Solution

The fourth proportional to 20,809,156.31, 28,716,424.18 and 11,516,744.42 is: 15,892,990.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,809,156.31 : 28,716,424.18 = 11,516,744.42 : x
  2. Step 2: Convert to fraction form
    20,809,156.31/28,716,424.18 = 11,516,744.42/x
  3. Step 3: Cross multiply
    20,809,156.31x = 28,716,424.18 × 11,516,744.42
  4. Step 4: Simplify right side
    20,809,156.31x = 330,719,717,937,368.06
  5. Step 5: Solve for x
    x = 330,719,717,937,368.06/20,809,156.31
  6. Step 6: Final answer
    x = 15,892,990.23

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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.