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Finding the Fourth Proportional to 12,461.74, 17,187.48 and 7,985.91

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Solution

The fourth proportional to 12,461.74, 17,187.48 and 7,985.91 is: 11,014.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,461.74 : 17,187.48 = 7,985.91 : x
  2. Step 2: Convert to fraction form
    12,461.74/17,187.48 = 7,985.91/x
  3. Step 3: Cross multiply
    12,461.74x = 17,187.48 × 7,985.91
  4. Step 4: Simplify right side
    12,461.74x = 137,257,624.95
  5. Step 5: Solve for x
    x = 137,257,624.95/12,461.74
  6. Step 6: Final answer
    x = 11,014.32

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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.