Home / 20,559.60-30,820.50-7,408.76

Finding the Fourth Proportional to 20,559.60, 30,820.50 and 7,408.76

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Solution

The fourth proportional to 20,559.60, 30,820.50 and 7,408.76 is: 11,106.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,559.60 : 30,820.50 = 7,408.76 : x
  2. Step 2: Convert to fraction form
    20,559.60/30,820.50 = 7,408.76/x
  3. Step 3: Cross multiply
    20,559.60x = 30,820.50 × 7,408.76
  4. Step 4: Simplify right side
    20,559.60x = 228,341,533.48
  5. Step 5: Solve for x
    x = 228,341,533.48/20,559.60
  6. Step 6: Final answer
    x = 11,106.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.