Home / 9,420.35-13,000.28-5,171.58

Finding the Fourth Proportional to 9,420.35, 13,000.28 and 5,171.58

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Solution

The fourth proportional to 9,420.35, 13,000.28 and 5,171.58 is: 7,136.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,420.35 : 13,000.28 = 5,171.58 : x
  2. Step 2: Convert to fraction form
    9,420.35/13,000.28 = 5,171.58/x
  3. Step 3: Cross multiply
    9,420.35x = 13,000.28 × 5,171.58
  4. Step 4: Simplify right side
    9,420.35x = 67,231,962.18
  5. Step 5: Solve for x
    x = 67,231,962.18/9,420.35
  6. Step 6: Final answer
    x = 7,136.89

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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.