Home / 20,123.40-30,152.70-16,818.60

Finding the Fourth Proportional to 20,123.40, 30,152.70 and 16,818.60

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Solution

The fourth proportional to 20,123.40, 30,152.70 and 16,818.60 is: 25,200.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,123.40 : 30,152.70 = 16,818.60 : x
  2. Step 2: Convert to fraction form
    20,123.40/30,152.70 = 16,818.60/x
  3. Step 3: Cross multiply
    20,123.40x = 30,152.70 × 16,818.60
  4. Step 4: Simplify right side
    20,123.40x = 507,126,200.22
  5. Step 5: Solve for x
    x = 507,126,200.22/20,123.40
  6. Step 6: Final answer
    x = 25,200.82

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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.