Home / 30,800.31-42,504.45-16,653.15

Finding the Fourth Proportional to 30,800.31, 42,504.45 and 16,653.15

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Solution

The fourth proportional to 30,800.31, 42,504.45 and 16,653.15 is: 22,981.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,800.31 : 42,504.45 = 16,653.15 : x
  2. Step 2: Convert to fraction form
    30,800.31/42,504.45 = 16,653.15/x
  3. Step 3: Cross multiply
    30,800.31x = 42,504.45 × 16,653.15
  4. Step 4: Simplify right side
    30,800.31x = 707,832,981.52
  5. Step 5: Solve for x
    x = 707,832,981.52/30,800.31
  6. Step 6: Final answer
    x = 22,981.36

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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.