Home / 30,924.32-42,630.64-20,295.36

Finding the Fourth Proportional to 30,924.32, 42,630.64 and 20,295.36

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Solution

The fourth proportional to 30,924.32, 42,630.64 and 20,295.36 is: 27,978.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,924.32 : 42,630.64 = 20,295.36 : x
  2. Step 2: Convert to fraction form
    30,924.32/42,630.64 = 20,295.36/x
  3. Step 3: Cross multiply
    30,924.32x = 42,630.64 × 20,295.36
  4. Step 4: Simplify right side
    30,924.32x = 865,204,185.83
  5. Step 5: Solve for x
    x = 865,204,185.83/30,924.32
  6. Step 6: Final answer
    x = 27,978.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.