Home / 28,488.46-42,728.73-9,768.20

Finding the Fourth Proportional to 28,488.46, 42,728.73 and 9,768.20

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Solution

The fourth proportional to 28,488.46, 42,728.73 and 9,768.20 is: 14,650.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,488.46 : 42,728.73 = 9,768.20 : x
  2. Step 2: Convert to fraction form
    28,488.46/42,728.73 = 9,768.20/x
  3. Step 3: Cross multiply
    28,488.46x = 42,728.73 × 9,768.20
  4. Step 4: Simplify right side
    28,488.46x = 417,382,585.06
  5. Step 5: Solve for x
    x = 417,382,585.06/28,488.46
  6. Step 6: Final answer
    x = 14,650.94

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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.