Home / 21,340.36-29,453.29-12,395.35

Finding the Fourth Proportional to 21,340.36, 29,453.29 and 12,395.35

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Solution

The fourth proportional to 21,340.36, 29,453.29 and 12,395.35 is: 17,107.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,340.36 : 29,453.29 = 12,395.35 : x
  2. Step 2: Convert to fraction form
    21,340.36/29,453.29 = 12,395.35/x
  3. Step 3: Cross multiply
    21,340.36x = 29,453.29 × 12,395.35
  4. Step 4: Simplify right side
    21,340.36x = 365,083,913.75
  5. Step 5: Solve for x
    x = 365,083,913.75/21,340.36
  6. Step 6: Final answer
    x = 17,107.67

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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.