Home / 30,807.32-42,513.88-16,660.12

Finding the Fourth Proportional to 30,807.32, 42,513.88 and 16,660.12

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Solution

The fourth proportional to 30,807.32, 42,513.88 and 16,660.12 is: 22,990.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,807.32 : 42,513.88 = 16,660.12 : x
  2. Step 2: Convert to fraction form
    30,807.32/42,513.88 = 16,660.12/x
  3. Step 3: Cross multiply
    30,807.32x = 42,513.88 × 16,660.12
  4. Step 4: Simplify right side
    30,807.32x = 708,286,342.47
  5. Step 5: Solve for x
    x = 708,286,342.47/30,807.32
  6. Step 6: Final answer
    x = 22,990.85

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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.