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Finding the Fourth Proportional to 30,874.56, 46,314.57 and 8,688.12

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Solution

The fourth proportional to 30,874.56, 46,314.57 and 8,688.12 is: 13,032.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,874.56 : 46,314.57 = 8,688.12 : x
  2. Step 2: Convert to fraction form
    30,874.56/46,314.57 = 8,688.12/x
  3. Step 3: Cross multiply
    30,874.56x = 46,314.57 × 8,688.12
  4. Step 4: Simplify right side
    30,874.56x = 402,386,541.91
  5. Step 5: Solve for x
    x = 402,386,541.91/30,874.56
  6. Step 6: Final answer
    x = 13,032.95

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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.