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Finding the Fourth Proportional to 8,985.18, 13,407.49 and 8,051.23

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Solution

The fourth proportional to 8,985.18, 13,407.49 and 8,051.23 is: 12,013.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,985.18 : 13,407.49 = 8,051.23 : x
  2. Step 2: Convert to fraction form
    8,985.18/13,407.49 = 8,051.23/x
  3. Step 3: Cross multiply
    8,985.18x = 13,407.49 × 8,051.23
  4. Step 4: Simplify right side
    8,985.18x = 107,946,745.46
  5. Step 5: Solve for x
    x = 107,946,745.46/8,985.18
  6. Step 6: Final answer
    x = 12,013.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.