Home / 14,694.55-20,278.40-7,980.12

Finding the Fourth Proportional to 14,694.55, 20,278.40 and 7,980.12

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Solution

The fourth proportional to 14,694.55, 20,278.40 and 7,980.12 is: 11,012.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,694.55 : 20,278.40 = 7,980.12 : x
  2. Step 2: Convert to fraction form
    14,694.55/20,278.40 = 7,980.12/x
  3. Step 3: Cross multiply
    14,694.55x = 20,278.40 × 7,980.12
  4. Step 4: Simplify right side
    14,694.55x = 161,824,085.36
  5. Step 5: Solve for x
    x = 161,824,085.36/14,694.55
  6. Step 6: Final answer
    x = 11,012.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.