Home / 30,720.72-46,081.96-8,535.72

Finding the Fourth Proportional to 30,720.72, 46,081.96 and 8,535.72

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Solution

The fourth proportional to 30,720.72, 46,081.96 and 8,535.72 is: 12,803.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,720.72 : 46,081.96 = 8,535.72 : x
  2. Step 2: Convert to fraction form
    30,720.72/46,081.96 = 8,535.72/x
  3. Step 3: Cross multiply
    30,720.72x = 46,081.96 × 8,535.72
  4. Step 4: Simplify right side
    30,720.72x = 393,342,707.61
  5. Step 5: Solve for x
    x = 393,342,707.61/30,720.72
  6. Step 6: Final answer
    x = 12,803.82

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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.