Home / 28,943.73-43,437.47-21,172.59

Finding the Fourth Proportional to 28,943.73, 43,437.47 and 21,172.59

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Solution

The fourth proportional to 28,943.73, 43,437.47 and 21,172.59 is: 31,774.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,943.73 : 43,437.47 = 21,172.59 : x
  2. Step 2: Convert to fraction form
    28,943.73/43,437.47 = 21,172.59/x
  3. Step 3: Cross multiply
    28,943.73x = 43,437.47 × 21,172.59
  4. Step 4: Simplify right side
    28,943.73x = 919,683,637.08
  5. Step 5: Solve for x
    x = 919,683,637.08/28,943.73
  6. Step 6: Final answer
    x = 31,774.88

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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.