Home / 30,936.46-42,689.95-18,190.16

Finding the Fourth Proportional to 30,936.46, 42,689.95 and 18,190.16

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Solution

The fourth proportional to 30,936.46, 42,689.95 and 18,190.16 is: 25,101.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,936.46 : 42,689.95 = 18,190.16 : x
  2. Step 2: Convert to fraction form
    30,936.46/42,689.95 = 18,190.16/x
  3. Step 3: Cross multiply
    30,936.46x = 42,689.95 × 18,190.16
  4. Step 4: Simplify right side
    30,936.46x = 776,537,020.89
  5. Step 5: Solve for x
    x = 776,537,020.89/30,936.46
  6. Step 6: Final answer
    x = 25,101.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.