Home / 30,837.62-42,555.91-16,690.47

Finding the Fourth Proportional to 30,837.62, 42,555.91 and 16,690.47

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Solution

The fourth proportional to 30,837.62, 42,555.91 and 16,690.47 is: 23,032.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,837.62 : 42,555.91 = 16,690.47 : x
  2. Step 2: Convert to fraction form
    30,837.62/42,555.91 = 16,690.47/x
  3. Step 3: Cross multiply
    30,837.62x = 42,555.91 × 16,690.47
  4. Step 4: Simplify right side
    30,837.62x = 710,278,097.45
  5. Step 5: Solve for x
    x = 710,278,097.45/30,837.62
  6. Step 6: Final answer
    x = 23,032.84

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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.