Home / 28,200.08-42,290.40-9,477.20

Finding the Fourth Proportional to 28,200.08, 42,290.40 and 9,477.20

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Solution

The fourth proportional to 28,200.08, 42,290.40 and 9,477.20 is: 14,212.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,200.08 : 42,290.40 = 9,477.20 : x
  2. Step 2: Convert to fraction form
    28,200.08/42,290.40 = 9,477.20/x
  3. Step 3: Cross multiply
    28,200.08x = 42,290.40 × 9,477.20
  4. Step 4: Simplify right side
    28,200.08x = 400,794,578.88
  5. Step 5: Solve for x
    x = 400,794,578.88/28,200.08
  6. Step 6: Final answer
    x = 14,212.53

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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.