Home / 13,845.62-20,779.28-9,658.40

Finding the Fourth Proportional to 13,845.62, 20,779.28 and 9,658.40

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Solution

The fourth proportional to 13,845.62, 20,779.28 and 9,658.40 is: 14,495.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,845.62 : 20,779.28 = 9,658.40 : x
  2. Step 2: Convert to fraction form
    13,845.62/20,779.28 = 9,658.40/x
  3. Step 3: Cross multiply
    13,845.62x = 20,779.28 × 9,658.40
  4. Step 4: Simplify right side
    13,845.62x = 200,694,518.20
  5. Step 5: Solve for x
    x = 200,694,518.20/13,845.62
  6. Step 6: Final answer
    x = 14,495.16

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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.