Home / 21,023.09-31,536.80-12,148.37

Finding the Fourth Proportional to 21,023.09, 31,536.80 and 12,148.37

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Solution

The fourth proportional to 21,023.09, 31,536.80 and 12,148.37 is: 18,223.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,023.09 : 31,536.80 = 12,148.37 : x
  2. Step 2: Convert to fraction form
    21,023.09/31,536.80 = 12,148.37/x
  3. Step 3: Cross multiply
    21,023.09x = 31,536.80 × 12,148.37
  4. Step 4: Simplify right side
    21,023.09x = 383,120,715.02
  5. Step 5: Solve for x
    x = 383,120,715.02/21,023.09
  6. Step 6: Final answer
    x = 18,223.81

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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.