Home / 13,295.10-18,345.78-7,628.34

Finding the Fourth Proportional to 13,295.10, 18,345.78 and 7,628.34

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Solution

The fourth proportional to 13,295.10, 18,345.78 and 7,628.34 is: 10,526.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,295.10 : 18,345.78 = 7,628.34 : x
  2. Step 2: Convert to fraction form
    13,295.10/18,345.78 = 7,628.34/x
  3. Step 3: Cross multiply
    13,295.10x = 18,345.78 × 7,628.34
  4. Step 4: Simplify right side
    13,295.10x = 139,947,847.41
  5. Step 5: Solve for x
    x = 139,947,847.41/13,295.10
  6. Step 6: Final answer
    x = 10,526.27

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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.