Home / 21,420,360.72-29,552,797.98-13,689,862.47

Finding the Fourth Proportional to 21,420,360.72, 29,552,797.98 and 13,689,862.47

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Solution

The fourth proportional to 21,420,360.72, 29,552,797.98 and 13,689,862.47 is: 18,887,344.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,420,360.72 : 29,552,797.98 = 13,689,862.47 : x
  2. Step 2: Convert to fraction form
    21,420,360.72/29,552,797.98 = 13,689,862.47/x
  3. Step 3: Cross multiply
    21,420,360.72x = 29,552,797.98 × 13,689,862.47
  4. Step 4: Simplify right side
    21,420,360.72x = 404,573,739,949,893.81
  5. Step 5: Solve for x
    x = 404,573,739,949,893.81/21,420,360.72
  6. Step 6: Final answer
    x = 18,887,344.86

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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.