Home / 12,461.46-17,187.09-7,985.63

Finding the Fourth Proportional to 12,461.46, 17,187.09 and 7,985.63

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Solution

The fourth proportional to 12,461.46, 17,187.09 and 7,985.63 is: 11,013.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,461.46 : 17,187.09 = 7,985.63 : x
  2. Step 2: Convert to fraction form
    12,461.46/17,187.09 = 7,985.63/x
  3. Step 3: Cross multiply
    12,461.46x = 17,187.09 × 7,985.63
  4. Step 4: Simplify right side
    12,461.46x = 137,249,691.55
  5. Step 5: Solve for x
    x = 137,249,691.55/12,461.46
  6. Step 6: Final answer
    x = 11,013.93

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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.