Home / 30,807.36-42,514.16-16,660.20

Finding the Fourth Proportional to 30,807.36, 42,514.16 and 16,660.20

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Solution

The fourth proportional to 30,807.36, 42,514.16 and 16,660.20 is: 22,991.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,807.36 : 42,514.16 = 16,660.20 : x
  2. Step 2: Convert to fraction form
    30,807.36/42,514.16 = 16,660.20/x
  3. Step 3: Cross multiply
    30,807.36x = 42,514.16 × 16,660.20
  4. Step 4: Simplify right side
    30,807.36x = 708,294,408.43
  5. Step 5: Solve for x
    x = 708,294,408.43/30,807.36
  6. Step 6: Final answer
    x = 22,991.08

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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.