Home / 30,800.86-42,505.18-16,653.70

Finding the Fourth Proportional to 30,800.86, 42,505.18 and 16,653.70

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Solution

The fourth proportional to 30,800.86, 42,505.18 and 16,653.70 is: 22,982.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,800.86 : 42,505.18 = 16,653.70 : x
  2. Step 2: Convert to fraction form
    30,800.86/42,505.18 = 16,653.70/x
  3. Step 3: Cross multiply
    30,800.86x = 42,505.18 × 16,653.70
  4. Step 4: Simplify right side
    30,800.86x = 707,868,574.50
  5. Step 5: Solve for x
    x = 707,868,574.50/30,800.86
  6. Step 6: Final answer
    x = 22,982.11

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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.