Home / 12,518.42-18,781.16-6,270.89

Finding the Fourth Proportional to 12,518.42, 18,781.16 and 6,270.89

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Solution

The fourth proportional to 12,518.42, 18,781.16 and 6,270.89 is: 9,408.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,518.42 : 18,781.16 = 6,270.89 : x
  2. Step 2: Convert to fraction form
    12,518.42/18,781.16 = 6,270.89/x
  3. Step 3: Cross multiply
    12,518.42x = 18,781.16 × 6,270.89
  4. Step 4: Simplify right side
    12,518.42x = 117,774,463.17
  5. Step 5: Solve for x
    x = 117,774,463.17/12,518.42
  6. Step 6: Final answer
    x = 9,408.10

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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.