Home / 13,325.62-18,389.95-7,662.21

Finding the Fourth Proportional to 13,325.62, 18,389.95 and 7,662.21

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Solution

The fourth proportional to 13,325.62, 18,389.95 and 7,662.21 is: 10,574.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,325.62 : 18,389.95 = 7,662.21 : x
  2. Step 2: Convert to fraction form
    13,325.62/18,389.95 = 7,662.21/x
  3. Step 3: Cross multiply
    13,325.62x = 18,389.95 × 7,662.21
  4. Step 4: Simplify right side
    13,325.62x = 140,907,566.84
  5. Step 5: Solve for x
    x = 140,907,566.84/13,325.62
  6. Step 6: Final answer
    x = 10,574.18

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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.