Home / 18,870.32-28,303.65-5,722.80

Finding the Fourth Proportional to 18,870.32, 28,303.65 and 5,722.80

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Solution

The fourth proportional to 18,870.32, 28,303.65 and 5,722.80 is: 8,583.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,870.32 : 28,303.65 = 5,722.80 : x
  2. Step 2: Convert to fraction form
    18,870.32/28,303.65 = 5,722.80/x
  3. Step 3: Cross multiply
    18,870.32x = 28,303.65 × 5,722.80
  4. Step 4: Simplify right side
    18,870.32x = 161,976,197.38
  5. Step 5: Solve for x
    x = 161,976,197.38/18,870.32
  6. Step 6: Final answer
    x = 8,583.65

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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.