Home / 13,990.09-20,985.14-4,627.60

Finding the Fourth Proportional to 13,990.09, 20,985.14 and 4,627.60

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Solution

The fourth proportional to 13,990.09, 20,985.14 and 4,627.60 is: 6,941.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,990.09 : 20,985.14 = 4,627.60 : x
  2. Step 2: Convert to fraction form
    13,990.09/20,985.14 = 4,627.60/x
  3. Step 3: Cross multiply
    13,990.09x = 20,985.14 × 4,627.60
  4. Step 4: Simplify right side
    13,990.09x = 97,110,833.86
  5. Step 5: Solve for x
    x = 97,110,833.86/13,990.09
  6. Step 6: Final answer
    x = 6,941.40

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Similar ratio
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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.