Home / 21,058.60-31,598.88-8,587.84

Finding the Fourth Proportional to 21,058.60, 31,598.88 and 8,587.84

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Solution

The fourth proportional to 21,058.60, 31,598.88 and 8,587.84 is: 12,886.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,058.60 : 31,598.88 = 8,587.84 : x
  2. Step 2: Convert to fraction form
    21,058.60/31,598.88 = 8,587.84/x
  3. Step 3: Cross multiply
    21,058.60x = 31,598.88 × 8,587.84
  4. Step 4: Simplify right side
    21,058.60x = 271,366,125.62
  5. Step 5: Solve for x
    x = 271,366,125.62/21,058.60
  6. Step 6: Final answer
    x = 12,886.24

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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.