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Finding the Fourth Proportional to 30,690.80, 46,036.20 and 16,927.28

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Solution

The fourth proportional to 30,690.80, 46,036.20 and 16,927.28 is: 25,390.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,690.80 : 46,036.20 = 16,927.28 : x
  2. Step 2: Convert to fraction form
    30,690.80/46,036.20 = 16,927.28/x
  3. Step 3: Cross multiply
    30,690.80x = 46,036.20 × 16,927.28
  4. Step 4: Simplify right side
    30,690.80x = 779,267,647.54
  5. Step 5: Solve for x
    x = 779,267,647.54/30,690.80
  6. Step 6: Final answer
    x = 25,390.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.