Home / 28,556.80-42,835.20-19,225.60

Finding the Fourth Proportional to 28,556.80, 42,835.20 and 19,225.60

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Solution

The fourth proportional to 28,556.80, 42,835.20 and 19,225.60 is: 28,838.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,556.80 : 42,835.20 = 19,225.60 : x
  2. Step 2: Convert to fraction form
    28,556.80/42,835.20 = 19,225.60/x
  3. Step 3: Cross multiply
    28,556.80x = 42,835.20 × 19,225.60
  4. Step 4: Simplify right side
    28,556.80x = 823,532,421.12
  5. Step 5: Solve for x
    x = 823,532,421.12/28,556.80
  6. Step 6: Final answer
    x = 28,838.40

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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.