Home / 21,058.61-31,587.95-5,476.25

Finding the Fourth Proportional to 21,058.61, 31,587.95 and 5,476.25

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Solution

The fourth proportional to 21,058.61, 31,587.95 and 5,476.25 is: 8,214.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,058.61 : 31,587.95 = 5,476.25 : x
  2. Step 2: Convert to fraction form
    21,058.61/31,587.95 = 5,476.25/x
  3. Step 3: Cross multiply
    21,058.61x = 31,587.95 × 5,476.25
  4. Step 4: Simplify right side
    21,058.61x = 172,983,511.19
  5. Step 5: Solve for x
    x = 172,983,511.19/21,058.61
  6. Step 6: Final answer
    x = 8,214.38

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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.