Home / 19,208.40-28,780.20-15,903.60

Finding the Fourth Proportional to 19,208.40, 28,780.20 and 15,903.60

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Solution

The fourth proportional to 19,208.40, 28,780.20 and 15,903.60 is: 23,828.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,208.40 : 28,780.20 = 15,903.60 : x
  2. Step 2: Convert to fraction form
    19,208.40/28,780.20 = 15,903.60/x
  3. Step 3: Cross multiply
    19,208.40x = 28,780.20 × 15,903.60
  4. Step 4: Simplify right side
    19,208.40x = 457,708,788.72
  5. Step 5: Solve for x
    x = 457,708,788.72/19,208.40
  6. Step 6: Final answer
    x = 23,828.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.