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Finding the Fourth Proportional to 30,507.54, 45,686.79 and 18,804.66

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Solution

The fourth proportional to 30,507.54, 45,686.79 and 18,804.66 is: 28,161.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,507.54 : 45,686.79 = 18,804.66 : x
  2. Step 2: Convert to fraction form
    30,507.54/45,686.79 = 18,804.66/x
  3. Step 3: Cross multiply
    30,507.54x = 45,686.79 × 18,804.66
  4. Step 4: Simplify right side
    30,507.54x = 859,124,552.44
  5. Step 5: Solve for x
    x = 859,124,552.44/30,507.54
  6. Step 6: Final answer
    x = 28,161.06

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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.