Home / 28,190.40-42,216.48-18,928.32

Finding the Fourth Proportional to 28,190.40, 42,216.48 and 18,928.32

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Solution

The fourth proportional to 28,190.40, 42,216.48 and 18,928.32 is: 28,346.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,190.40 : 42,216.48 = 18,928.32 : x
  2. Step 2: Convert to fraction form
    28,190.40/42,216.48 = 18,928.32/x
  3. Step 3: Cross multiply
    28,190.40x = 42,216.48 × 18,928.32
  4. Step 4: Simplify right side
    28,190.40x = 799,087,042.71
  5. Step 5: Solve for x
    x = 799,087,042.71/28,190.40
  6. Step 6: Final answer
    x = 28,346.07

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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.