Home / 15,689.07-21,629.97-13,441.32

Finding the Fourth Proportional to 15,689.07, 21,629.97 and 13,441.32

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Solution

The fourth proportional to 15,689.07, 21,629.97 and 13,441.32 is: 18,531.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,689.07 : 21,629.97 = 13,441.32 : x
  2. Step 2: Convert to fraction form
    15,689.07/21,629.97 = 13,441.32/x
  3. Step 3: Cross multiply
    15,689.07x = 21,629.97 × 13,441.32
  4. Step 4: Simplify right side
    15,689.07x = 290,735,348.36
  5. Step 5: Solve for x
    x = 290,735,348.36/15,689.07
  6. Step 6: Final answer
    x = 18,531.08

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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.