Home / 30,800.68-42,504.95-16,653.51

Finding the Fourth Proportional to 30,800.68, 42,504.95 and 16,653.51

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Solution

The fourth proportional to 30,800.68, 42,504.95 and 16,653.51 is: 22,981.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,800.68 : 42,504.95 = 16,653.51 : x
  2. Step 2: Convert to fraction form
    30,800.68/42,504.95 = 16,653.51/x
  3. Step 3: Cross multiply
    30,800.68x = 42,504.95 × 16,653.51
  4. Step 4: Simplify right side
    30,800.68x = 707,856,651.51
  5. Step 5: Solve for x
    x = 707,856,651.51/30,800.68
  6. Step 6: Final answer
    x = 22,981.85

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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.