Home / 28,570.32-42,883.12-13,789.64

Finding the Fourth Proportional to 28,570.32, 42,883.12 and 13,789.64

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Solution

The fourth proportional to 28,570.32, 42,883.12 and 13,789.64 is: 20,697.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,570.32 : 42,883.12 = 13,789.64 : x
  2. Step 2: Convert to fraction form
    28,570.32/42,883.12 = 13,789.64/x
  3. Step 3: Cross multiply
    28,570.32x = 42,883.12 × 13,789.64
  4. Step 4: Simplify right side
    28,570.32x = 591,342,717.93
  5. Step 5: Solve for x
    x = 591,342,717.93/28,570.32
  6. Step 6: Final answer
    x = 20,697.80

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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.