Home / 12,587.72-17,408.67-11,056.82

Finding the Fourth Proportional to 12,587.72, 17,408.67 and 11,056.82

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Solution

The fourth proportional to 12,587.72, 17,408.67 and 11,056.82 is: 15,291.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,587.72 : 17,408.67 = 11,056.82 : x
  2. Step 2: Convert to fraction form
    12,587.72/17,408.67 = 11,056.82/x
  3. Step 3: Cross multiply
    12,587.72x = 17,408.67 × 11,056.82
  4. Step 4: Simplify right side
    12,587.72x = 192,484,530.63
  5. Step 5: Solve for x
    x = 192,484,530.63/12,587.72
  6. Step 6: Final answer
    x = 15,291.45

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1.5x scale

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.