Home / 28,119.60-38,800.80-15,544.44

Finding the Fourth Proportional to 28,119.60, 38,800.80 and 15,544.44

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Solution

The fourth proportional to 28,119.60, 38,800.80 and 15,544.44 is: 21,448.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,119.60 : 38,800.80 = 15,544.44 : x
  2. Step 2: Convert to fraction form
    28,119.60/38,800.80 = 15,544.44/x
  3. Step 3: Cross multiply
    28,119.60x = 38,800.80 × 15,544.44
  4. Step 4: Simplify right side
    28,119.60x = 603,136,707.55
  5. Step 5: Solve for x
    x = 603,136,707.55/28,119.60
  6. Step 6: Final answer
    x = 21,448.98

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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.