Home / 30,790.43-42,490.80-16,643.27

Finding the Fourth Proportional to 30,790.43, 42,490.80 and 16,643.27

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Solution

The fourth proportional to 30,790.43, 42,490.80 and 16,643.27 is: 22,967.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,790.43 : 42,490.80 = 16,643.27 : x
  2. Step 2: Convert to fraction form
    30,790.43/42,490.80 = 16,643.27/x
  3. Step 3: Cross multiply
    30,790.43x = 42,490.80 × 16,643.27
  4. Step 4: Simplify right side
    30,790.43x = 707,185,856.92
  5. Step 5: Solve for x
    x = 707,185,856.92/30,790.43
  6. Step 6: Final answer
    x = 22,967.72

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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.