Home / 21,327.43-29,431.65-11,767.40

Finding the Fourth Proportional to 21,327.43, 29,431.65 and 11,767.40

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Solution

The fourth proportional to 21,327.43, 29,431.65 and 11,767.40 is: 16,238.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,327.43 : 29,431.65 = 11,767.40 : x
  2. Step 2: Convert to fraction form
    21,327.43/29,431.65 = 11,767.40/x
  3. Step 3: Cross multiply
    21,327.43x = 29,431.65 × 11,767.40
  4. Step 4: Simplify right side
    21,327.43x = 346,334,088.32
  5. Step 5: Solve for x
    x = 346,334,088.32/21,327.43
  6. Step 6: Final answer
    x = 16,238.91

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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.