Home / 12,145.98-16,761.51-6,840.89

Finding the Fourth Proportional to 12,145.98, 16,761.51 and 6,840.89

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Solution

The fourth proportional to 12,145.98, 16,761.51 and 6,840.89 is: 9,440.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,145.98 : 16,761.51 = 6,840.89 : x
  2. Step 2: Convert to fraction form
    12,145.98/16,761.51 = 6,840.89/x
  3. Step 3: Cross multiply
    12,145.98x = 16,761.51 × 6,840.89
  4. Step 4: Simplify right side
    12,145.98x = 114,663,646.14
  5. Step 5: Solve for x
    x = 114,663,646.14/12,145.98
  6. Step 6: Final answer
    x = 9,440.46

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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.