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Finding the Fourth Proportional to 30,988.48, 46,479.36 and 18,339.52

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Solution

The fourth proportional to 30,988.48, 46,479.36 and 18,339.52 is: 27,507.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,988.48 : 46,479.36 = 18,339.52 : x
  2. Step 2: Convert to fraction form
    30,988.48/46,479.36 = 18,339.52/x
  3. Step 3: Cross multiply
    30,988.48x = 46,479.36 × 18,339.52
  4. Step 4: Simplify right side
    30,988.48x = 852,409,152.31
  5. Step 5: Solve for x
    x = 852,409,152.31/30,988.48
  6. Step 6: Final answer
    x = 27,507.29

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