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Finding the Fourth Proportional to 15,081.59, 20,807.32 and 8,708.01

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Solution

The fourth proportional to 15,081.59, 20,807.32 and 8,708.01 is: 12,014.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,081.59 : 20,807.32 = 8,708.01 : x
  2. Step 2: Convert to fraction form
    15,081.59/20,807.32 = 8,708.01/x
  3. Step 3: Cross multiply
    15,081.59x = 20,807.32 × 8,708.01
  4. Step 4: Simplify right side
    15,081.59x = 181,190,350.63
  5. Step 5: Solve for x
    x = 181,190,350.63/15,081.59
  6. Step 6: Final answer
    x = 12,014.01

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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.