Home / 18,851.15-28,276.43-4,619.76

Finding the Fourth Proportional to 18,851.15, 28,276.43 and 4,619.76

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Solution

The fourth proportional to 18,851.15, 28,276.43 and 4,619.76 is: 6,929.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,851.15 : 28,276.43 = 4,619.76 : x
  2. Step 2: Convert to fraction form
    18,851.15/28,276.43 = 4,619.76/x
  3. Step 3: Cross multiply
    18,851.15x = 28,276.43 × 4,619.76
  4. Step 4: Simplify right side
    18,851.15x = 130,630,297.16
  5. Step 5: Solve for x
    x = 130,630,297.16/18,851.15
  6. Step 6: Final answer
    x = 6,929.57

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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.