Home / 30,920.22-42,709.95-22,870.25

Finding the Fourth Proportional to 30,920.22, 42,709.95 and 22,870.25

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Solution

The fourth proportional to 30,920.22, 42,709.95 and 22,870.25 is: 31,590.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,920.22 : 42,709.95 = 22,870.25 : x
  2. Step 2: Convert to fraction form
    30,920.22/42,709.95 = 22,870.25/x
  3. Step 3: Cross multiply
    30,920.22x = 42,709.95 × 22,870.25
  4. Step 4: Simplify right side
    30,920.22x = 976,787,020.44
  5. Step 5: Solve for x
    x = 976,787,020.44/30,920.22
  6. Step 6: Final answer
    x = 31,590.56

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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.