Home / 21,080,220,936.90-31,619,167,502.85-15,413,616,361.21

Finding the Fourth Proportional to 21,080,220,936.90, 31,619,167,502.85 and 15,413,616,361.21

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Solution

The fourth proportional to 21,080,220,936.90, 31,619,167,502.85 and 15,413,616,361.21 is: 23,119,573,509.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,080,220,936.90 : 31,619,167,502.85 = 15,413,616,361.21 : x
  2. Step 2: Convert to fraction form
    21,080,220,936.90/31,619,167,502.85 = 15,413,616,361.21/x
  3. Step 3: Cross multiply
    21,080,220,936.90x = 31,619,167,502.85 × 15,413,616,361.21
  4. Step 4: Simplify right side
    21,080,220,936.90x = 487,365,717,549,941,063,680
  5. Step 5: Solve for x
    x = 487,365,717,549,941,063,680/21,080,220,936.90
  6. Step 6: Final answer
    x = 23,119,573,509.64

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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.