Home / 13,615.32-20,423.52-6,220.20

Finding the Fourth Proportional to 13,615.32, 20,423.52 and 6,220.20

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Solution

The fourth proportional to 13,615.32, 20,423.52 and 6,220.20 is: 9,330.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,615.32 : 20,423.52 = 6,220.20 : x
  2. Step 2: Convert to fraction form
    13,615.32/20,423.52 = 6,220.20/x
  3. Step 3: Cross multiply
    13,615.32x = 20,423.52 × 6,220.20
  4. Step 4: Simplify right side
    13,615.32x = 127,038,379.10
  5. Step 5: Solve for x
    x = 127,038,379.10/13,615.32
  6. Step 6: Final answer
    x = 9,330.55

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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.