Home / 18,886.08-28,331.10-6,405.60

Finding the Fourth Proportional to 18,886.08, 28,331.10 and 6,405.60

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Solution

The fourth proportional to 18,886.08, 28,331.10 and 6,405.60 is: 9,609.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,886.08 : 28,331.10 = 6,405.60 : x
  2. Step 2: Convert to fraction form
    18,886.08/28,331.10 = 6,405.60/x
  3. Step 3: Cross multiply
    18,886.08x = 28,331.10 × 6,405.60
  4. Step 4: Simplify right side
    18,886.08x = 181,477,694.16
  5. Step 5: Solve for x
    x = 181,477,694.16/18,886.08
  6. Step 6: Final answer
    x = 9,609.07

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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.