Home / 14,185.64-21,278.43-14,165.12

Finding the Fourth Proportional to 14,185.64, 21,278.43 and 14,165.12

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Solution

The fourth proportional to 14,185.64, 21,278.43 and 14,165.12 is: 21,247.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,185.64 : 21,278.43 = 14,165.12 : x
  2. Step 2: Convert to fraction form
    14,185.64/21,278.43 = 14,165.12/x
  3. Step 3: Cross multiply
    14,185.64x = 21,278.43 × 14,165.12
  4. Step 4: Simplify right side
    14,185.64x = 301,411,407.97
  5. Step 5: Solve for x
    x = 301,411,407.97/14,185.64
  6. Step 6: Final answer
    x = 21,247.65

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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.