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Finding the Fourth Proportional to 13,807.86, 19,047.06 and 8,501.60

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Solution

The fourth proportional to 13,807.86, 19,047.06 and 8,501.60 is: 11,727.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,807.86 : 19,047.06 = 8,501.60 : x
  2. Step 2: Convert to fraction form
    13,807.86/19,047.06 = 8,501.60/x
  3. Step 3: Cross multiply
    13,807.86x = 19,047.06 × 8,501.60
  4. Step 4: Simplify right side
    13,807.86x = 161,930,485.30
  5. Step 5: Solve for x
    x = 161,930,485.30/13,807.86
  6. Step 6: Final answer
    x = 11,727.41

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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.