Home / 20,594.63-28,417.96-13,421.27

Finding the Fourth Proportional to 20,594.63, 28,417.96 and 13,421.27

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Solution

The fourth proportional to 20,594.63, 28,417.96 and 13,421.27 is: 18,519.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,594.63 : 28,417.96 = 13,421.27 : x
  2. Step 2: Convert to fraction form
    20,594.63/28,417.96 = 13,421.27/x
  3. Step 3: Cross multiply
    20,594.63x = 28,417.96 × 13,421.27
  4. Step 4: Simplify right side
    20,594.63x = 381,405,114.01
  5. Step 5: Solve for x
    x = 381,405,114.01/20,594.63
  6. Step 6: Final answer
    x = 18,519.64

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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.