Home / 21,265.34-31,879.53-15,327.63

Finding the Fourth Proportional to 21,265.34, 31,879.53 and 15,327.63

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Solution

The fourth proportional to 21,265.34, 31,879.53 and 15,327.63 is: 22,978.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,265.34 : 31,879.53 = 15,327.63 : x
  2. Step 2: Convert to fraction form
    21,265.34/31,879.53 = 15,327.63/x
  3. Step 3: Cross multiply
    21,265.34x = 31,879.53 × 15,327.63
  4. Step 4: Simplify right side
    21,265.34x = 488,637,640.41
  5. Step 5: Solve for x
    x = 488,637,640.41/21,265.34
  6. Step 6: Final answer
    x = 22,978.13

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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.