Home / 18,690.63-28,040.67-6,210.72

Finding the Fourth Proportional to 18,690.63, 28,040.67 and 6,210.72

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Solution

The fourth proportional to 18,690.63, 28,040.67 and 6,210.72 is: 9,317.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,690.63 : 28,040.67 = 6,210.72 : x
  2. Step 2: Convert to fraction form
    18,690.63/28,040.67 = 6,210.72/x
  3. Step 3: Cross multiply
    18,690.63x = 28,040.67 × 6,210.72
  4. Step 4: Simplify right side
    18,690.63x = 174,152,749.98
  5. Step 5: Solve for x
    x = 174,152,749.98/18,690.63
  6. Step 6: Final answer
    x = 9,317.65

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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.