Home / 13,990.72-20,987.61-4,627.32

Finding the Fourth Proportional to 13,990.72, 20,987.61 and 4,627.32

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Solution

The fourth proportional to 13,990.72, 20,987.61 and 4,627.32 is: 6,941.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,990.72 : 20,987.61 = 4,627.32 : x
  2. Step 2: Convert to fraction form
    13,990.72/20,987.61 = 4,627.32/x
  3. Step 3: Cross multiply
    13,990.72x = 20,987.61 × 4,627.32
  4. Step 4: Simplify right side
    13,990.72x = 97,116,387.51
  5. Step 5: Solve for x
    x = 97,116,387.51/13,990.72
  6. Step 6: Final answer
    x = 6,941.49

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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.