Home / 22,587.61-31,170.43-12,515.96

Finding the Fourth Proportional to 22,587.61, 31,170.43 and 12,515.96

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Solution

The fourth proportional to 22,587.61, 31,170.43 and 12,515.96 is: 17,271.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,587.61 : 31,170.43 = 12,515.96 : x
  2. Step 2: Convert to fraction form
    22,587.61/31,170.43 = 12,515.96/x
  3. Step 3: Cross multiply
    22,587.61x = 31,170.43 × 12,515.96
  4. Step 4: Simplify right side
    22,587.61x = 390,127,777.14
  5. Step 5: Solve for x
    x = 390,127,777.14/22,587.61
  6. Step 6: Final answer
    x = 17,271.76

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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.