Home / 15,446.94-21,300.78-13,216.20

Finding the Fourth Proportional to 15,446.94, 21,300.78 and 13,216.20

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Solution

The fourth proportional to 15,446.94, 21,300.78 and 13,216.20 is: 18,224.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,446.94 : 21,300.78 = 13,216.20 : x
  2. Step 2: Convert to fraction form
    15,446.94/21,300.78 = 13,216.20/x
  3. Step 3: Cross multiply
    15,446.94x = 21,300.78 × 13,216.20
  4. Step 4: Simplify right side
    15,446.94x = 281,515,368.64
  5. Step 5: Solve for x
    x = 281,515,368.64/15,446.94
  6. Step 6: Final answer
    x = 18,224.67

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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.