Home / 28,704.52-39,612.70-15,784.34

Finding the Fourth Proportional to 28,704.52, 39,612.70 and 15,784.34

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Solution

The fourth proportional to 28,704.52, 39,612.70 and 15,784.34 is: 21,782.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,704.52 : 39,612.70 = 15,784.34 : x
  2. Step 2: Convert to fraction form
    28,704.52/39,612.70 = 15,784.34/x
  3. Step 3: Cross multiply
    28,704.52x = 39,612.70 × 15,784.34
  4. Step 4: Simplify right side
    28,704.52x = 625,260,325.12
  5. Step 5: Solve for x
    x = 625,260,325.12/28,704.52
  6. Step 6: Final answer
    x = 21,782.64

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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.