Home / 21,465.36-29,622.42-12,518.28

Finding the Fourth Proportional to 21,465.36, 29,622.42 and 12,518.28

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Solution

The fourth proportional to 21,465.36, 29,622.42 and 12,518.28 is: 17,275.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,465.36 : 29,622.42 = 12,518.28 : x
  2. Step 2: Convert to fraction form
    21,465.36/29,622.42 = 12,518.28/x
  3. Step 3: Cross multiply
    21,465.36x = 29,622.42 × 12,518.28
  4. Step 4: Simplify right side
    21,465.36x = 370,821,747.84
  5. Step 5: Solve for x
    x = 370,821,747.84/21,465.36
  6. Step 6: Final answer
    x = 17,275.36

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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.