Home / 20,508.40-30,762.60-16,814.80

Finding the Fourth Proportional to 20,508.40, 30,762.60 and 16,814.80

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Solution

The fourth proportional to 20,508.40, 30,762.60 and 16,814.80 is: 25,222.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,508.40 : 30,762.60 = 16,814.80 : x
  2. Step 2: Convert to fraction form
    20,508.40/30,762.60 = 16,814.80/x
  3. Step 3: Cross multiply
    20,508.40x = 30,762.60 × 16,814.80
  4. Step 4: Simplify right side
    20,508.40x = 517,266,966.48
  5. Step 5: Solve for x
    x = 517,266,966.48/20,508.40
  6. Step 6: Final answer
    x = 25,222.20

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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.