Home / 21,322.88-29,426.18-11,892.05

Finding the Fourth Proportional to 21,322.88, 29,426.18 and 11,892.05

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Solution

The fourth proportional to 21,322.88, 29,426.18 and 11,892.05 is: 16,411.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,322.88 : 29,426.18 = 11,892.05 : x
  2. Step 2: Convert to fraction form
    21,322.88/29,426.18 = 11,892.05/x
  3. Step 3: Cross multiply
    21,322.88x = 29,426.18 × 11,892.05
  4. Step 4: Simplify right side
    21,322.88x = 349,937,397.28
  5. Step 5: Solve for x
    x = 349,937,397.28/21,322.88
  6. Step 6: Final answer
    x = 16,411.36

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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.