Home / 34,145.60-51,218.40-20,148.80

Finding the Fourth Proportional to 34,145.60, 51,218.40 and 20,148.80

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Solution

The fourth proportional to 34,145.60, 51,218.40 and 20,148.80 is: 30,223.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,145.60 : 51,218.40 = 20,148.80 : x
  2. Step 2: Convert to fraction form
    34,145.60/51,218.40 = 20,148.80/x
  3. Step 3: Cross multiply
    34,145.60x = 51,218.40 × 20,148.80
  4. Step 4: Simplify right side
    34,145.60x = 1,031,989,297.92
  5. Step 5: Solve for x
    x = 1,031,989,297.92/34,145.60
  6. Step 6: Final answer
    x = 30,223.20

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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.