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Finding the Fourth Proportional to 9,620, 14,355.56 and 8,583.20

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Solution

The fourth proportional to 9,620, 14,355.56 and 8,583.20 is: 12,808.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,620 : 14,355.56 = 8,583.20 : x
  2. Step 2: Convert to fraction form
    9,620/14,355.56 = 8,583.20/x
  3. Step 3: Cross multiply
    9,620x = 14,355.56 × 8,583.20
  4. Step 4: Simplify right side
    9,620x = 123,216,642.59
  5. Step 5: Solve for x
    x = 123,216,642.59/9,620
  6. Step 6: Final answer
    x = 12,808.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.