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Finding the Fourth Proportional to 30,987.76, 46,480.86 and 8,801.08

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Solution

The fourth proportional to 30,987.76, 46,480.86 and 8,801.08 is: 13,201.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,987.76 : 46,480.86 = 8,801.08 : x
  2. Step 2: Convert to fraction form
    30,987.76/46,480.86 = 8,801.08/x
  3. Step 3: Cross multiply
    30,987.76x = 46,480.86 × 8,801.08
  4. Step 4: Simplify right side
    30,987.76x = 409,081,767.33
  5. Step 5: Solve for x
    x = 409,081,767.33/30,987.76
  6. Step 6: Final answer
    x = 13,201.40

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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.