Home / 21,889.86-32,782.16-12,501.42

Finding the Fourth Proportional to 21,889.86, 32,782.16 and 12,501.42

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Solution

The fourth proportional to 21,889.86, 32,782.16 and 12,501.42 is: 18,722.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,889.86 : 32,782.16 = 12,501.42 : x
  2. Step 2: Convert to fraction form
    21,889.86/32,782.16 = 12,501.42/x
  3. Step 3: Cross multiply
    21,889.86x = 32,782.16 × 12,501.42
  4. Step 4: Simplify right side
    21,889.86x = 409,823,458.99
  5. Step 5: Solve for x
    x = 409,823,458.99/21,889.86
  6. Step 6: Final answer
    x = 18,722.07

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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.