Home / 13,670.80-18,864.56-8,004.78

Finding the Fourth Proportional to 13,670.80, 18,864.56 and 8,004.78

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Solution

The fourth proportional to 13,670.80, 18,864.56 and 8,004.78 is: 11,045.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,670.80 : 18,864.56 = 8,004.78 : x
  2. Step 2: Convert to fraction form
    13,670.80/18,864.56 = 8,004.78/x
  3. Step 3: Cross multiply
    13,670.80x = 18,864.56 × 8,004.78
  4. Step 4: Simplify right side
    13,670.80x = 151,006,672.61
  5. Step 5: Solve for x
    x = 151,006,672.61/13,670.80
  6. Step 6: Final answer
    x = 11,045.93

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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.