Home / 30,848.80-42,568.32-18,271.12

Finding the Fourth Proportional to 30,848.80, 42,568.32 and 18,271.12

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Solution

The fourth proportional to 30,848.80, 42,568.32 and 18,271.12 is: 25,212.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,848.80 : 42,568.32 = 18,271.12 : x
  2. Step 2: Convert to fraction form
    30,848.80/42,568.32 = 18,271.12/x
  3. Step 3: Cross multiply
    30,848.80x = 42,568.32 × 18,271.12
  4. Step 4: Simplify right side
    30,848.80x = 777,770,882.92
  5. Step 5: Solve for x
    x = 777,770,882.92/30,848.80
  6. Step 6: Final answer
    x = 25,212.35

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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.