Home / 20,989,484.64-28,964,216.27-11,569,863.69

Finding the Fourth Proportional to 20,989,484.64, 28,964,216.27 and 11,569,863.69

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Solution

The fourth proportional to 20,989,484.64, 28,964,216.27 and 11,569,863.69 is: 15,965,710.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,989,484.64 : 28,964,216.27 = 11,569,863.69 : x
  2. Step 2: Convert to fraction form
    20,989,484.64/28,964,216.27 = 11,569,863.69/x
  3. Step 3: Cross multiply
    20,989,484.64x = 28,964,216.27 × 11,569,863.69
  4. Step 4: Simplify right side
    20,989,484.64x = 335,112,034,160,504.88
  5. Step 5: Solve for x
    x = 335,112,034,160,504.88/20,989,484.64
  6. Step 6: Final answer
    x = 15,965,710.45

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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.