Home / 18,870.32-28,305.44-5,019.32

Finding the Fourth Proportional to 18,870.32, 28,305.44 and 5,019.32

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Solution

The fourth proportional to 18,870.32, 28,305.44 and 5,019.32 is: 7,528.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,870.32 : 28,305.44 = 5,019.32 : x
  2. Step 2: Convert to fraction form
    18,870.32/28,305.44 = 5,019.32/x
  3. Step 3: Cross multiply
    18,870.32x = 28,305.44 × 5,019.32
  4. Step 4: Simplify right side
    18,870.32x = 142,074,061.10
  5. Step 5: Solve for x
    x = 142,074,061.10/18,870.32
  6. Step 6: Final answer
    x = 7,528.97

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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.