Home / 13,991.82-20,988.72-4,631.46

Finding the Fourth Proportional to 13,991.82, 20,988.72 and 4,631.46

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Solution

The fourth proportional to 13,991.82, 20,988.72 and 4,631.46 is: 6,947.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,991.82 : 20,988.72 = 4,631.46 : x
  2. Step 2: Convert to fraction form
    13,991.82/20,988.72 = 4,631.46/x
  3. Step 3: Cross multiply
    13,991.82x = 20,988.72 × 4,631.46
  4. Step 4: Simplify right side
    13,991.82x = 97,208,417.13
  5. Step 5: Solve for x
    x = 97,208,417.13/13,991.82
  6. Step 6: Final answer
    x = 6,947.52

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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.