Home / 18,724.50-28,090.40-8,336.25

Finding the Fourth Proportional to 18,724.50, 28,090.40 and 8,336.25

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Solution

The fourth proportional to 18,724.50, 28,090.40 and 8,336.25 is: 12,506.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,724.50 : 28,090.40 = 8,336.25 : x
  2. Step 2: Convert to fraction form
    18,724.50/28,090.40 = 8,336.25/x
  3. Step 3: Cross multiply
    18,724.50x = 28,090.40 × 8,336.25
  4. Step 4: Simplify right side
    18,724.50x = 234,168,555.32
  5. Step 5: Solve for x
    x = 234,168,555.32/18,724.50
  6. Step 6: Final answer
    x = 12,506.00

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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.