Home / 30,750.12-46,020.60-19,664.40

Finding the Fourth Proportional to 30,750.12, 46,020.60 and 19,664.40

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Solution

The fourth proportional to 30,750.12, 46,020.60 and 19,664.40 is: 29,429.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,750.12 : 46,020.60 = 19,664.40 : x
  2. Step 2: Convert to fraction form
    30,750.12/46,020.60 = 19,664.40/x
  3. Step 3: Cross multiply
    30,750.12x = 46,020.60 × 19,664.40
  4. Step 4: Simplify right side
    30,750.12x = 904,967,486.64
  5. Step 5: Solve for x
    x = 904,967,486.64/30,750.12
  6. Step 6: Final answer
    x = 29,429.72

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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.