Home / 28,335.09-42,420.51-21,344.52

Finding the Fourth Proportional to 28,335.09, 42,420.51 and 21,344.52

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Solution

The fourth proportional to 28,335.09, 42,420.51 and 21,344.52 is: 31,954.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,335.09 : 42,420.51 = 21,344.52 : x
  2. Step 2: Convert to fraction form
    28,335.09/42,420.51 = 21,344.52/x
  3. Step 3: Cross multiply
    28,335.09x = 42,420.51 × 21,344.52
  4. Step 4: Simplify right side
    28,335.09x = 905,445,424.11
  5. Step 5: Solve for x
    x = 905,445,424.11/28,335.09
  6. Step 6: Final answer
    x = 31,954.92

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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.