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Finding the Fourth Proportional to 30,807.29, 46,211.01 and 8,620.86

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Solution

The fourth proportional to 30,807.29, 46,211.01 and 8,620.86 is: 12,931.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,807.29 : 46,211.01 = 8,620.86 : x
  2. Step 2: Convert to fraction form
    30,807.29/46,211.01 = 8,620.86/x
  3. Step 3: Cross multiply
    30,807.29x = 46,211.01 × 8,620.86
  4. Step 4: Simplify right side
    30,807.29x = 398,378,647.67
  5. Step 5: Solve for x
    x = 398,378,647.67/30,807.29
  6. Step 6: Final answer
    x = 12,931.31

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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.