Home / 21,246,479.20-31,869,718.80-19,475,009.20

Finding the Fourth Proportional to 21,246,479.20, 31,869,718.80 and 19,475,009.20

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Solution

The fourth proportional to 21,246,479.20, 31,869,718.80 and 19,475,009.20 is: 29,212,513.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,246,479.20 : 31,869,718.80 = 19,475,009.20 : x
  2. Step 2: Convert to fraction form
    21,246,479.20/31,869,718.80 = 19,475,009.20/x
  3. Step 3: Cross multiply
    21,246,479.20x = 31,869,718.80 × 19,475,009.20
  4. Step 4: Simplify right side
    21,246,479.20x = 620,663,066,831,413
  5. Step 5: Solve for x
    x = 620,663,066,831,413/21,246,479.20
  6. Step 6: Final answer
    x = 29,212,513.80

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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.