Home / 12,586.41-18,881.90-5,186.76

Finding the Fourth Proportional to 12,586.41, 18,881.90 and 5,186.76

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Solution

The fourth proportional to 12,586.41, 18,881.90 and 5,186.76 is: 7,781.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,586.41 : 18,881.90 = 5,186.76 : x
  2. Step 2: Convert to fraction form
    12,586.41/18,881.90 = 5,186.76/x
  3. Step 3: Cross multiply
    12,586.41x = 18,881.90 × 5,186.76
  4. Step 4: Simplify right side
    12,586.41x = 97,935,883.64
  5. Step 5: Solve for x
    x = 97,935,883.64/12,586.41
  6. Step 6: Final answer
    x = 7,781.08

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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.