Home / 28,274.64-39,020.76-15,699.48

Finding the Fourth Proportional to 28,274.64, 39,020.76 and 15,699.48

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Solution

The fourth proportional to 28,274.64, 39,020.76 and 15,699.48 is: 21,666.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,274.64 : 39,020.76 = 15,699.48 : x
  2. Step 2: Convert to fraction form
    28,274.64/39,020.76 = 15,699.48/x
  3. Step 3: Cross multiply
    28,274.64x = 39,020.76 × 15,699.48
  4. Step 4: Simplify right side
    28,274.64x = 612,605,641.20
  5. Step 5: Solve for x
    x = 612,605,641.20/28,274.64
  6. Step 6: Final answer
    x = 21,666.26

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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.