Home / 30,815.86-46,220.22-8,631.02

Finding the Fourth Proportional to 30,815.86, 46,220.22 and 8,631.02

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Solution

The fourth proportional to 30,815.86, 46,220.22 and 8,631.02 is: 12,945.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,815.86 : 46,220.22 = 8,631.02 : x
  2. Step 2: Convert to fraction form
    30,815.86/46,220.22 = 8,631.02/x
  3. Step 3: Cross multiply
    30,815.86x = 46,220.22 × 8,631.02
  4. Step 4: Simplify right side
    30,815.86x = 398,927,643.22
  5. Step 5: Solve for x
    x = 398,927,643.22/30,815.86
  6. Step 6: Final answer
    x = 12,945.53

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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.