Home / 27,128.52-37,411.02-21,157.98

Finding the Fourth Proportional to 27,128.52, 37,411.02 and 21,157.98

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Solution

The fourth proportional to 27,128.52, 37,411.02 and 21,157.98 is: 29,177.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,128.52 : 37,411.02 = 21,157.98 : x
  2. Step 2: Convert to fraction form
    27,128.52/37,411.02 = 21,157.98/x
  3. Step 3: Cross multiply
    27,128.52x = 37,411.02 × 21,157.98
  4. Step 4: Simplify right side
    27,128.52x = 791,541,612.94
  5. Step 5: Solve for x
    x = 791,541,612.94/27,128.52
  6. Step 6: Final answer
    x = 29,177.47

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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.