Home / 13,607.69-18,778.01-7,639.24

Finding the Fourth Proportional to 13,607.69, 18,778.01 and 7,639.24

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Solution

The fourth proportional to 13,607.69, 18,778.01 and 7,639.24 is: 10,541.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,607.69 : 18,778.01 = 7,639.24 : x
  2. Step 2: Convert to fraction form
    13,607.69/18,778.01 = 7,639.24/x
  3. Step 3: Cross multiply
    13,607.69x = 18,778.01 × 7,639.24
  4. Step 4: Simplify right side
    13,607.69x = 143,449,725.11
  5. Step 5: Solve for x
    x = 143,449,725.11/13,607.69
  6. Step 6: Final answer
    x = 10,541.81

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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.