Home / 30,758.90-46,138.38-8,572.34

Finding the Fourth Proportional to 30,758.90, 46,138.38 and 8,572.34

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Solution

The fourth proportional to 30,758.90, 46,138.38 and 8,572.34 is: 12,858.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,758.90 : 46,138.38 = 8,572.34 : x
  2. Step 2: Convert to fraction form
    30,758.90/46,138.38 = 8,572.34/x
  3. Step 3: Cross multiply
    30,758.90x = 46,138.38 × 8,572.34
  4. Step 4: Simplify right side
    30,758.90x = 395,513,880.41
  5. Step 5: Solve for x
    x = 395,513,880.41/30,758.90
  6. Step 6: Final answer
    x = 12,858.52

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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.