Home / 28,787.51-39,726.16-16,040.64

Finding the Fourth Proportional to 28,787.51, 39,726.16 and 16,040.64

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Solution

The fourth proportional to 28,787.51, 39,726.16 and 16,040.64 is: 22,135.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,787.51 : 39,726.16 = 16,040.64 : x
  2. Step 2: Convert to fraction form
    28,787.51/39,726.16 = 16,040.64/x
  3. Step 3: Cross multiply
    28,787.51x = 39,726.16 × 16,040.64
  4. Step 4: Simplify right side
    28,787.51x = 637,233,031.14
  5. Step 5: Solve for x
    x = 637,233,031.14/28,787.51
  6. Step 6: Final answer
    x = 22,135.75

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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.