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Finding the Fourth Proportional to 56,309.58, 84,405.53 and 18,838.83

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Solution

The fourth proportional to 56,309.58, 84,405.53 and 18,838.83 is: 28,238.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,309.58 : 84,405.53 = 18,838.83 : x
  2. Step 2: Convert to fraction form
    56,309.58/84,405.53 = 18,838.83/x
  3. Step 3: Cross multiply
    56,309.58x = 84,405.53 × 18,838.83
  4. Step 4: Simplify right side
    56,309.58x = 1,590,101,213.60
  5. Step 5: Solve for x
    x = 1,590,101,213.60/56,309.58
  6. Step 6: Final answer
    x = 28,238.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.