Home / 21,245.23-31,861.32-7,011.07

Finding the Fourth Proportional to 21,245.23, 31,861.32 and 7,011.07

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Solution

The fourth proportional to 21,245.23, 31,861.32 and 7,011.07 is: 10,514.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,245.23 : 31,861.32 = 7,011.07 : x
  2. Step 2: Convert to fraction form
    21,245.23/31,861.32 = 7,011.07/x
  3. Step 3: Cross multiply
    21,245.23x = 31,861.32 × 7,011.07
  4. Step 4: Simplify right side
    21,245.23x = 223,381,944.81
  5. Step 5: Solve for x
    x = 223,381,944.81/21,245.23
  6. Step 6: Final answer
    x = 10,514.45

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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.