Home / 30,985.10-46,479.09-10,208.78

Finding the Fourth Proportional to 30,985.10, 46,479.09 and 10,208.78

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Solution

The fourth proportional to 30,985.10, 46,479.09 and 10,208.78 is: 15,313.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,985.10 : 46,479.09 = 10,208.78 : x
  2. Step 2: Convert to fraction form
    30,985.10/46,479.09 = 10,208.78/x
  3. Step 3: Cross multiply
    30,985.10x = 46,479.09 × 10,208.78
  4. Step 4: Simplify right side
    30,985.10x = 474,494,804.41
  5. Step 5: Solve for x
    x = 474,494,804.41/30,985.10
  6. Step 6: Final answer
    x = 15,313.64

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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.