Home / 15,697.41-21,641.27-13,449.57

Finding the Fourth Proportional to 15,697.41, 21,641.27 and 13,449.57

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Solution

The fourth proportional to 15,697.41, 21,641.27 and 13,449.57 is: 18,542.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,697.41 : 21,641.27 = 13,449.57 : x
  2. Step 2: Convert to fraction form
    15,697.41/21,641.27 = 13,449.57/x
  3. Step 3: Cross multiply
    15,697.41x = 21,641.27 × 13,449.57
  4. Step 4: Simplify right side
    15,697.41x = 291,065,708.51
  5. Step 5: Solve for x
    x = 291,065,708.51/15,697.41
  6. Step 6: Final answer
    x = 18,542.28

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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.