Home / 28,657.01-42,929.60-18,766.31

Finding the Fourth Proportional to 28,657.01, 42,929.60 and 18,766.31

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Solution

The fourth proportional to 28,657.01, 42,929.60 and 18,766.31 is: 28,112.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,657.01 : 42,929.60 = 18,766.31 : x
  2. Step 2: Convert to fraction form
    28,657.01/42,929.60 = 18,766.31/x
  3. Step 3: Cross multiply
    28,657.01x = 42,929.60 × 18,766.31
  4. Step 4: Simplify right side
    28,657.01x = 805,629,967.13
  5. Step 5: Solve for x
    x = 805,629,967.13/28,657.01
  6. Step 6: Final answer
    x = 28,112.84

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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.