Home / 28,145.40-42,202.08-11,485.92

Finding the Fourth Proportional to 28,145.40, 42,202.08 and 11,485.92

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Solution

The fourth proportional to 28,145.40, 42,202.08 and 11,485.92 is: 17,222.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,145.40 : 42,202.08 = 11,485.92 : x
  2. Step 2: Convert to fraction form
    28,145.40/42,202.08 = 11,485.92/x
  3. Step 3: Cross multiply
    28,145.40x = 42,202.08 × 11,485.92
  4. Step 4: Simplify right side
    28,145.40x = 484,729,714.71
  5. Step 5: Solve for x
    x = 484,729,714.71/28,145.40
  6. Step 6: Final answer
    x = 17,222.34

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1.5x scale

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.