Home / 14,142.12-21,207.71-4,779.63

Finding the Fourth Proportional to 14,142.12, 21,207.71 and 4,779.63

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Solution

The fourth proportional to 14,142.12, 21,207.71 and 4,779.63 is: 7,167.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,142.12 : 21,207.71 = 4,779.63 : x
  2. Step 2: Convert to fraction form
    14,142.12/21,207.71 = 4,779.63/x
  3. Step 3: Cross multiply
    14,142.12x = 21,207.71 × 4,779.63
  4. Step 4: Simplify right side
    14,142.12x = 101,364,983.05
  5. Step 5: Solve for x
    x = 101,364,983.05/14,142.12
  6. Step 6: Final answer
    x = 7,167.59

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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.