Home / 20,807.72-28,707.62-11,848.87

Finding the Fourth Proportional to 20,807.72, 28,707.62 and 11,848.87

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Solution

The fourth proportional to 20,807.72, 28,707.62 and 11,848.87 is: 16,347.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,807.72 : 28,707.62 = 11,848.87 : x
  2. Step 2: Convert to fraction form
    20,807.72/28,707.62 = 11,848.87/x
  3. Step 3: Cross multiply
    20,807.72x = 28,707.62 × 11,848.87
  4. Step 4: Simplify right side
    20,807.72x = 340,152,857.39
  5. Step 5: Solve for x
    x = 340,152,857.39/20,807.72
  6. Step 6: Final answer
    x = 16,347.44

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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.