Home / 21,211.83-31,798.26-9,518.67

Finding the Fourth Proportional to 21,211.83, 31,798.26 and 9,518.67

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Solution

The fourth proportional to 21,211.83, 31,798.26 and 9,518.67 is: 14,269.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,211.83 : 31,798.26 = 9,518.67 : x
  2. Step 2: Convert to fraction form
    21,211.83/31,798.26 = 9,518.67/x
  3. Step 3: Cross multiply
    21,211.83x = 31,798.26 × 9,518.67
  4. Step 4: Simplify right side
    21,211.83x = 302,677,143.51
  5. Step 5: Solve for x
    x = 302,677,143.51/21,211.83
  6. Step 6: Final answer
    x = 14,269.26

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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.