Home / 21,057.18-31,567.15-8,587.63

Finding the Fourth Proportional to 21,057.18, 31,567.15 and 8,587.63

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Solution

The fourth proportional to 21,057.18, 31,567.15 and 8,587.63 is: 12,873.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,057.18 : 31,567.15 = 8,587.63 : x
  2. Step 2: Convert to fraction form
    21,057.18/31,567.15 = 8,587.63/x
  3. Step 3: Cross multiply
    21,057.18x = 31,567.15 × 8,587.63
  4. Step 4: Simplify right side
    21,057.18x = 271,087,004.35
  5. Step 5: Solve for x
    x = 271,087,004.35/21,057.18
  6. Step 6: Final answer
    x = 12,873.85

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1.5x scale

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.