Home / 30,809.07-42,517.13-18,072

Finding the Fourth Proportional to 30,809.07, 42,517.13 and 18,072

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Solution

The fourth proportional to 30,809.07, 42,517.13 and 18,072 is: 24,939.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,809.07 : 42,517.13 = 18,072 : x
  2. Step 2: Convert to fraction form
    30,809.07/42,517.13 = 18,072/x
  3. Step 3: Cross multiply
    30,809.07x = 42,517.13 × 18,072
  4. Step 4: Simplify right side
    30,809.07x = 768,369,483
  5. Step 5: Solve for x
    x = 768,369,483/30,809.07
  6. Step 6: Final answer
    x = 24,939.72

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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.