Home / 30,421.16-41,981.40-16,993.58

Finding the Fourth Proportional to 30,421.16, 41,981.40 and 16,993.58

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Solution

The fourth proportional to 30,421.16, 41,981.40 and 16,993.58 is: 23,451.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,421.16 : 41,981.40 = 16,993.58 : x
  2. Step 2: Convert to fraction form
    30,421.16/41,981.40 = 16,993.58/x
  3. Step 3: Cross multiply
    30,421.16x = 41,981.40 × 16,993.58
  4. Step 4: Simplify right side
    30,421.16x = 713,414,279.41
  5. Step 5: Solve for x
    x = 713,414,279.41/30,421.16
  6. Step 6: Final answer
    x = 23,451.25

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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.