Home / 28,285.65-42,428.47-7,225.73

Finding the Fourth Proportional to 28,285.65, 42,428.47 and 7,225.73

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Solution

The fourth proportional to 28,285.65, 42,428.47 and 7,225.73 is: 10,838.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,285.65 : 42,428.47 = 7,225.73 : x
  2. Step 2: Convert to fraction form
    28,285.65/42,428.47 = 7,225.73/x
  3. Step 3: Cross multiply
    28,285.65x = 42,428.47 × 7,225.73
  4. Step 4: Simplify right side
    28,285.65x = 306,576,796.16
  5. Step 5: Solve for x
    x = 306,576,796.16/28,285.65
  6. Step 6: Final answer
    x = 10,838.60

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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.