Home / 19,465.76-26,881.44-13,512.80

Finding the Fourth Proportional to 19,465.76, 26,881.44 and 13,512.80

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Solution

The fourth proportional to 19,465.76, 26,881.44 and 13,512.80 is: 18,660.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,465.76 : 26,881.44 = 13,512.80 : x
  2. Step 2: Convert to fraction form
    19,465.76/26,881.44 = 13,512.80/x
  3. Step 3: Cross multiply
    19,465.76x = 26,881.44 × 13,512.80
  4. Step 4: Simplify right side
    19,465.76x = 363,243,522.43
  5. Step 5: Solve for x
    x = 363,243,522.43/19,465.76
  6. Step 6: Final answer
    x = 18,660.64

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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.