Home / 21,121,844.32-31,686,343.28-7,285,045.92

Finding the Fourth Proportional to 21,121,844.32, 31,686,343.28 and 7,285,045.92

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Solution

The fourth proportional to 21,121,844.32, 31,686,343.28 and 7,285,045.92 is: 10,928,802.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,121,844.32 : 31,686,343.28 = 7,285,045.92 : x
  2. Step 2: Convert to fraction form
    21,121,844.32/31,686,343.28 = 7,285,045.92/x
  3. Step 3: Cross multiply
    21,121,844.32x = 31,686,343.28 × 7,285,045.92
  4. Step 4: Simplify right side
    21,121,844.32x = 230,836,465,831,683.44
  5. Step 5: Solve for x
    x = 230,836,465,831,683.44/21,121,844.32
  6. Step 6: Final answer
    x = 10,928,802.54

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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.