Home / 28,878,143.31-39,851,772.11-15,647,681.27

Finding the Fourth Proportional to 28,878,143.31, 39,851,772.11 and 15,647,681.27

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Solution

The fourth proportional to 28,878,143.31, 39,851,772.11 and 15,647,681.27 is: 21,593,764.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,878,143.31 : 39,851,772.11 = 15,647,681.27 : x
  2. Step 2: Convert to fraction form
    28,878,143.31/39,851,772.11 = 15,647,681.27/x
  3. Step 3: Cross multiply
    28,878,143.31x = 39,851,772.11 × 15,647,681.27
  4. Step 4: Simplify right side
    28,878,143.31x = 623,587,827,744,458.12
  5. Step 5: Solve for x
    x = 623,587,827,744,458.12/28,878,143.31
  6. Step 6: Final answer
    x = 21,593,764.57

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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.