Home / 21,057.23-31,567.25-8,587.69

Finding the Fourth Proportional to 21,057.23, 31,567.25 and 8,587.69

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Solution

The fourth proportional to 21,057.23, 31,567.25 and 8,587.69 is: 12,873.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,057.23 : 31,567.25 = 8,587.69 : x
  2. Step 2: Convert to fraction form
    21,057.23/31,567.25 = 8,587.69/x
  3. Step 3: Cross multiply
    21,057.23x = 31,567.25 × 8,587.69
  4. Step 4: Simplify right side
    21,057.23x = 271,089,699.70
  5. Step 5: Solve for x
    x = 271,089,699.70/21,057.23
  6. Step 6: Final answer
    x = 12,873.95

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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.