Home / 30,370.78-45,562.32-12,840.58

Finding the Fourth Proportional to 30,370.78, 45,562.32 and 12,840.58

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Solution

The fourth proportional to 30,370.78, 45,562.32 and 12,840.58 is: 19,263.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,370.78 : 45,562.32 = 12,840.58 : x
  2. Step 2: Convert to fraction form
    30,370.78/45,562.32 = 12,840.58/x
  3. Step 3: Cross multiply
    30,370.78x = 45,562.32 × 12,840.58
  4. Step 4: Simplify right side
    30,370.78x = 585,046,614.95
  5. Step 5: Solve for x
    x = 585,046,614.95/30,370.78
  6. Step 6: Final answer
    x = 19,263.47

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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.