Home / 20,593.63-28,416.58-13,420.27

Finding the Fourth Proportional to 20,593.63, 28,416.58 and 13,420.27

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Solution

The fourth proportional to 20,593.63, 28,416.58 and 13,420.27 is: 18,518.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,593.63 : 28,416.58 = 13,420.27 : x
  2. Step 2: Convert to fraction form
    20,593.63/28,416.58 = 13,420.27/x
  3. Step 3: Cross multiply
    20,593.63x = 28,416.58 × 13,420.27
  4. Step 4: Simplify right side
    20,593.63x = 381,358,176.08
  5. Step 5: Solve for x
    x = 381,358,176.08/20,593.63
  6. Step 6: Final answer
    x = 18,518.26

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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.