Home / 28,394.04-39,184.44-15,819.60

Finding the Fourth Proportional to 28,394.04, 39,184.44 and 15,819.60

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Solution

The fourth proportional to 28,394.04, 39,184.44 and 15,819.60 is: 21,831.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,394.04 : 39,184.44 = 15,819.60 : x
  2. Step 2: Convert to fraction form
    28,394.04/39,184.44 = 15,819.60/x
  3. Step 3: Cross multiply
    28,394.04x = 39,184.44 × 15,819.60
  4. Step 4: Simplify right side
    28,394.04x = 619,882,167.02
  5. Step 5: Solve for x
    x = 619,882,167.02/28,394.04
  6. Step 6: Final answer
    x = 21,831.42

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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.