Home / 21,616,314.45-29,827,567.81-12,912,639.48

Finding the Fourth Proportional to 21,616,314.45, 29,827,567.81 and 12,912,639.48

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Solution

The fourth proportional to 21,616,314.45, 29,827,567.81 and 12,912,639.48 is: 17,817,682.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,616,314.45 : 29,827,567.81 = 12,912,639.48 : x
  2. Step 2: Convert to fraction form
    21,616,314.45/29,827,567.81 = 12,912,639.48/x
  3. Step 3: Cross multiply
    21,616,314.45x = 29,827,567.81 × 12,912,639.48
  4. Step 4: Simplify right side
    21,616,314.45x = 385,152,629,695,783.12
  5. Step 5: Solve for x
    x = 385,152,629,695,783.12/21,616,314.45
  6. Step 6: Final answer
    x = 17,817,682.59

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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.