Home / 10,285.80-15,428.70-9,882.60

Finding the Fourth Proportional to 10,285.80, 15,428.70 and 9,882.60

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Solution

The fourth proportional to 10,285.80, 15,428.70 and 9,882.60 is: 14,823.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,285.80 : 15,428.70 = 9,882.60 : x
  2. Step 2: Convert to fraction form
    10,285.80/15,428.70 = 9,882.60/x
  3. Step 3: Cross multiply
    10,285.80x = 15,428.70 × 9,882.60
  4. Step 4: Simplify right side
    10,285.80x = 152,475,670.62
  5. Step 5: Solve for x
    x = 152,475,670.62/10,285.80
  6. Step 6: Final answer
    x = 14,823.90

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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.