Home / 15,369.54-21,209.39-8,563.40

Finding the Fourth Proportional to 15,369.54, 21,209.39 and 8,563.40

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Solution

The fourth proportional to 15,369.54, 21,209.39 and 8,563.40 is: 11,817.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,369.54 : 21,209.39 = 8,563.40 : x
  2. Step 2: Convert to fraction form
    15,369.54/21,209.39 = 8,563.40/x
  3. Step 3: Cross multiply
    15,369.54x = 21,209.39 × 8,563.40
  4. Step 4: Simplify right side
    15,369.54x = 181,624,490.33
  5. Step 5: Solve for x
    x = 181,624,490.33/15,369.54
  6. Step 6: Final answer
    x = 11,817.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.