Home / 18,723.06-28,070.73-11,325.72

Finding the Fourth Proportional to 18,723.06, 28,070.73 and 11,325.72

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Solution

The fourth proportional to 18,723.06, 28,070.73 and 11,325.72 is: 16,980.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,723.06 : 28,070.73 = 11,325.72 : x
  2. Step 2: Convert to fraction form
    18,723.06/28,070.73 = 11,325.72/x
  3. Step 3: Cross multiply
    18,723.06x = 28,070.73 × 11,325.72
  4. Step 4: Simplify right side
    18,723.06x = 317,921,228.18
  5. Step 5: Solve for x
    x = 317,921,228.18/18,723.06
  6. Step 6: Final answer
    x = 16,980.20

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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.