Home / 20,520.37-28,300.33-13,347.63

Finding the Fourth Proportional to 20,520.37, 28,300.33 and 13,347.63

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Solution

The fourth proportional to 20,520.37, 28,300.33 and 13,347.63 is: 18,408.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,520.37 : 28,300.33 = 13,347.63 : x
  2. Step 2: Convert to fraction form
    20,520.37/28,300.33 = 13,347.63/x
  3. Step 3: Cross multiply
    20,520.37x = 28,300.33 × 13,347.63
  4. Step 4: Simplify right side
    20,520.37x = 377,742,333.72
  5. Step 5: Solve for x
    x = 377,742,333.72/20,520.37
  6. Step 6: Final answer
    x = 18,408.16

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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.