Home / 21,616,520.88-29,827,852.56-12,912,845.88

Finding the Fourth Proportional to 21,616,520.88, 29,827,852.56 and 12,912,845.88

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Solution

The fourth proportional to 21,616,520.88, 29,827,852.56 and 12,912,845.88 is: 17,817,967.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,616,520.88 : 29,827,852.56 = 12,912,845.88 : x
  2. Step 2: Convert to fraction form
    21,616,520.88/29,827,852.56 = 12,912,845.88/x
  3. Step 3: Cross multiply
    21,616,520.88x = 29,827,852.56 × 12,912,845.88
  4. Step 4: Simplify right side
    21,616,520.88x = 385,162,463,038,643.44
  5. Step 5: Solve for x
    x = 385,162,463,038,643.44/21,616,520.88
  6. Step 6: Final answer
    x = 17,817,967.34

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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.