Home / 13,990.56-20,971.05-4,628.18

Finding the Fourth Proportional to 13,990.56, 20,971.05 and 4,628.18

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Solution

The fourth proportional to 13,990.56, 20,971.05 and 4,628.18 is: 6,937.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,990.56 : 20,971.05 = 4,628.18 : x
  2. Step 2: Convert to fraction form
    13,990.56/20,971.05 = 4,628.18/x
  3. Step 3: Cross multiply
    13,990.56x = 20,971.05 × 4,628.18
  4. Step 4: Simplify right side
    13,990.56x = 97,057,689.33
  5. Step 5: Solve for x
    x = 97,057,689.33/13,990.56
  6. Step 6: Final answer
    x = 6,937.37

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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.