Home / 20,991.63-28,967.52-12,032.71

Finding the Fourth Proportional to 20,991.63, 28,967.52 and 12,032.71

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Solution

The fourth proportional to 20,991.63, 28,967.52 and 12,032.71 is: 16,604.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,991.63 : 28,967.52 = 12,032.71 : x
  2. Step 2: Convert to fraction form
    20,991.63/28,967.52 = 12,032.71/x
  3. Step 3: Cross multiply
    20,991.63x = 28,967.52 × 12,032.71
  4. Step 4: Simplify right side
    20,991.63x = 348,557,707.42
  5. Step 5: Solve for x
    x = 348,557,707.42/20,991.63
  6. Step 6: Final answer
    x = 16,604.60

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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.