Home / 30,798.90-42,502.49-16,651.75

Finding the Fourth Proportional to 30,798.90, 42,502.49 and 16,651.75

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Solution

The fourth proportional to 30,798.90, 42,502.49 and 16,651.75 is: 22,979.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,798.90 : 42,502.49 = 16,651.75 : x
  2. Step 2: Convert to fraction form
    30,798.90/42,502.49 = 16,651.75/x
  3. Step 3: Cross multiply
    30,798.90x = 42,502.49 × 16,651.75
  4. Step 4: Simplify right side
    30,798.90x = 707,740,837.86
  5. Step 5: Solve for x
    x = 707,740,837.86/30,798.90
  6. Step 6: Final answer
    x = 22,979.42

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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.