Home / 14,431.34-19,915.26-8,143.72

Finding the Fourth Proportional to 14,431.34, 19,915.26 and 8,143.72

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Solution

The fourth proportional to 14,431.34, 19,915.26 and 8,143.72 is: 11,238.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,431.34 : 19,915.26 = 8,143.72 : x
  2. Step 2: Convert to fraction form
    14,431.34/19,915.26 = 8,143.72/x
  3. Step 3: Cross multiply
    14,431.34x = 19,915.26 × 8,143.72
  4. Step 4: Simplify right side
    14,431.34x = 162,184,301.17
  5. Step 5: Solve for x
    x = 162,184,301.17/14,431.34
  6. Step 6: Final answer
    x = 11,238.34

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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.