Home / 14,138.64-19,509.66-8,472.69

Finding the Fourth Proportional to 14,138.64, 19,509.66 and 8,472.69

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Solution

The fourth proportional to 14,138.64, 19,509.66 and 8,472.69 is: 11,691.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,138.64 : 19,509.66 = 8,472.69 : x
  2. Step 2: Convert to fraction form
    14,138.64/19,509.66 = 8,472.69/x
  3. Step 3: Cross multiply
    14,138.64x = 19,509.66 × 8,472.69
  4. Step 4: Simplify right side
    14,138.64x = 165,299,301.19
  5. Step 5: Solve for x
    x = 165,299,301.19/14,138.64
  6. Step 6: Final answer
    x = 11,691.32

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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.