Home / 13,109.76-19,638.36-6,515.64

Finding the Fourth Proportional to 13,109.76, 19,638.36 and 6,515.64

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Solution

The fourth proportional to 13,109.76, 19,638.36 and 6,515.64 is: 9,760.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,109.76 : 19,638.36 = 6,515.64 : x
  2. Step 2: Convert to fraction form
    13,109.76/19,638.36 = 6,515.64/x
  3. Step 3: Cross multiply
    13,109.76x = 19,638.36 × 6,515.64
  4. Step 4: Simplify right side
    13,109.76x = 127,956,483.95
  5. Step 5: Solve for x
    x = 127,956,483.95/13,109.76
  6. Step 6: Final answer
    x = 9,760.40

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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.