Home / 10,158.72-14,021.28-6,432

Finding the Fourth Proportional to 10,158.72, 14,021.28 and 6,432

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Solution

The fourth proportional to 10,158.72, 14,021.28 and 6,432 is: 8,877.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,158.72 : 14,021.28 = 6,432 : x
  2. Step 2: Convert to fraction form
    10,158.72/14,021.28 = 6,432/x
  3. Step 3: Cross multiply
    10,158.72x = 14,021.28 × 6,432
  4. Step 4: Simplify right side
    10,158.72x = 90,184,872.96
  5. Step 5: Solve for x
    x = 90,184,872.96/10,158.72
  6. Step 6: Final answer
    x = 8,877.58

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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.