Home / 15,480.25-21,362.85-8,406.67

Finding the Fourth Proportional to 15,480.25, 21,362.85 and 8,406.67

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Solution

The fourth proportional to 15,480.25, 21,362.85 and 8,406.67 is: 11,601.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,480.25 : 21,362.85 = 8,406.67 : x
  2. Step 2: Convert to fraction form
    15,480.25/21,362.85 = 8,406.67/x
  3. Step 3: Cross multiply
    15,480.25x = 21,362.85 × 8,406.67
  4. Step 4: Simplify right side
    15,480.25x = 179,590,430.21
  5. Step 5: Solve for x
    x = 179,590,430.21/15,480.25
  6. Step 6: Final answer
    x = 11,601.26

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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.