Home / 30,848.64-42,582.24-20,240.64

Finding the Fourth Proportional to 30,848.64, 42,582.24 and 20,240.64

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Solution

The fourth proportional to 30,848.64, 42,582.24 and 20,240.64 is: 27,939.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,848.64 : 42,582.24 = 20,240.64 : x
  2. Step 2: Convert to fraction form
    30,848.64/42,582.24 = 20,240.64/x
  3. Step 3: Cross multiply
    30,848.64x = 42,582.24 × 20,240.64
  4. Step 4: Simplify right side
    30,848.64x = 861,891,790.23
  5. Step 5: Solve for x
    x = 861,891,790.23/30,848.64
  6. Step 6: Final answer
    x = 27,939.38

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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.