Home / 20,829.64-28,758.32-18,587.66

Finding the Fourth Proportional to 20,829.64, 28,758.32 and 18,587.66

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Solution

The fourth proportional to 20,829.64, 28,758.32 and 18,587.66 is: 25,662.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,829.64 : 28,758.32 = 18,587.66 : x
  2. Step 2: Convert to fraction form
    20,829.64/28,758.32 = 18,587.66/x
  3. Step 3: Cross multiply
    20,829.64x = 28,758.32 × 18,587.66
  4. Step 4: Simplify right side
    20,829.64x = 534,549,816.79
  5. Step 5: Solve for x
    x = 534,549,816.79/20,829.64
  6. Step 6: Final answer
    x = 25,662.94

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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.