Home / 30,715.89-46,068.69-8,531.51

Finding the Fourth Proportional to 30,715.89, 46,068.69 and 8,531.51

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Solution

The fourth proportional to 30,715.89, 46,068.69 and 8,531.51 is: 12,795.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,715.89 : 46,068.69 = 8,531.51 : x
  2. Step 2: Convert to fraction form
    30,715.89/46,068.69 = 8,531.51/x
  3. Step 3: Cross multiply
    30,715.89x = 46,068.69 × 8,531.51
  4. Step 4: Simplify right side
    30,715.89x = 393,035,489.42
  5. Step 5: Solve for x
    x = 393,035,489.42/30,715.89
  6. Step 6: Final answer
    x = 12,795.84

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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.