Home / 12,078.30-16,670.16-7,045.47

Finding the Fourth Proportional to 12,078.30, 16,670.16 and 7,045.47

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Solution

The fourth proportional to 12,078.30, 16,670.16 and 7,045.47 is: 9,723.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,078.30 : 16,670.16 = 7,045.47 : x
  2. Step 2: Convert to fraction form
    12,078.30/16,670.16 = 7,045.47/x
  3. Step 3: Cross multiply
    12,078.30x = 16,670.16 × 7,045.47
  4. Step 4: Simplify right side
    12,078.30x = 117,449,112.18
  5. Step 5: Solve for x
    x = 117,449,112.18/12,078.30
  6. Step 6: Final answer
    x = 9,723.98

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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.