Home / 28,284.52-39,034.02-15,709

Finding the Fourth Proportional to 28,284.52, 39,034.02 and 15,709

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Solution

The fourth proportional to 28,284.52, 39,034.02 and 15,709 is: 21,679.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,284.52 : 39,034.02 = 15,709 : x
  2. Step 2: Convert to fraction form
    28,284.52/39,034.02 = 15,709/x
  3. Step 3: Cross multiply
    28,284.52x = 39,034.02 × 15,709
  4. Step 4: Simplify right side
    28,284.52x = 613,185,420.18
  5. Step 5: Solve for x
    x = 613,185,420.18/28,284.52
  6. Step 6: Final answer
    x = 21,679.19

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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.