Home / 28,283.21-42,442.71-15,811.44

Finding the Fourth Proportional to 28,283.21, 42,442.71 and 15,811.44

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Solution

The fourth proportional to 28,283.21, 42,442.71 and 15,811.44 is: 23,727.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,283.21 : 42,442.71 = 15,811.44 : x
  2. Step 2: Convert to fraction form
    28,283.21/42,442.71 = 15,811.44/x
  3. Step 3: Cross multiply
    28,283.21x = 42,442.71 × 15,811.44
  4. Step 4: Simplify right side
    28,283.21x = 671,080,362.60
  5. Step 5: Solve for x
    x = 671,080,362.60/28,283.21
  6. Step 6: Final answer
    x = 23,727.16

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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.