Home / 13,943.64-19,245.76-7,977.18

Finding the Fourth Proportional to 13,943.64, 19,245.76 and 7,977.18

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Solution

The fourth proportional to 13,943.64, 19,245.76 and 7,977.18 is: 11,010.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,943.64 : 19,245.76 = 7,977.18 : x
  2. Step 2: Convert to fraction form
    13,943.64/19,245.76 = 7,977.18/x
  3. Step 3: Cross multiply
    13,943.64x = 19,245.76 × 7,977.18
  4. Step 4: Simplify right side
    13,943.64x = 153,526,891.76
  5. Step 5: Solve for x
    x = 153,526,891.76/13,943.64
  6. Step 6: Final answer
    x = 11,010.53

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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.