Home / 21,453.43-29,602.55-12,254.31

Finding the Fourth Proportional to 21,453.43, 29,602.55 and 12,254.31

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Solution

The fourth proportional to 21,453.43, 29,602.55 and 12,254.31 is: 16,909.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,453.43 : 29,602.55 = 12,254.31 : x
  2. Step 2: Convert to fraction form
    21,453.43/29,602.55 = 12,254.31/x
  3. Step 3: Cross multiply
    21,453.43x = 29,602.55 × 12,254.31
  4. Step 4: Simplify right side
    21,453.43x = 362,758,921.15
  5. Step 5: Solve for x
    x = 362,758,921.15/21,453.43
  6. Step 6: Final answer
    x = 16,909.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.