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Finding the Fourth Proportional to 30,855.42, 46,275.90 and 8,670.91

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Solution

The fourth proportional to 30,855.42, 46,275.90 and 8,670.91 is: 13,004.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,855.42 : 46,275.90 = 8,670.91 : x
  2. Step 2: Convert to fraction form
    30,855.42/46,275.90 = 8,670.91/x
  3. Step 3: Cross multiply
    30,855.42x = 46,275.90 × 8,670.91
  4. Step 4: Simplify right side
    30,855.42x = 401,254,164.07
  5. Step 5: Solve for x
    x = 401,254,164.07/30,855.42
  6. Step 6: Final answer
    x = 13,004.33

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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.