Home / 20,695.64-28,509.30-15,013.62

Finding the Fourth Proportional to 20,695.64, 28,509.30 and 15,013.62

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Solution

The fourth proportional to 20,695.64, 28,509.30 and 15,013.62 is: 20,682.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,695.64 : 28,509.30 = 15,013.62 : x
  2. Step 2: Convert to fraction form
    20,695.64/28,509.30 = 15,013.62/x
  3. Step 3: Cross multiply
    20,695.64x = 28,509.30 × 15,013.62
  4. Step 4: Simplify right side
    20,695.64x = 428,027,796.67
  5. Step 5: Solve for x
    x = 428,027,796.67/20,695.64
  6. Step 6: Final answer
    x = 20,682.03

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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.