Home / 13,927.55-19,218.87-7,639.92

Finding the Fourth Proportional to 13,927.55, 19,218.87 and 7,639.92

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Solution

The fourth proportional to 13,927.55, 19,218.87 and 7,639.92 is: 10,542.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,927.55 : 19,218.87 = 7,639.92 : x
  2. Step 2: Convert to fraction form
    13,927.55/19,218.87 = 7,639.92/x
  3. Step 3: Cross multiply
    13,927.55x = 19,218.87 × 7,639.92
  4. Step 4: Simplify right side
    13,927.55x = 146,830,629.29
  5. Step 5: Solve for x
    x = 146,830,629.29/13,927.55
  6. Step 6: Final answer
    x = 10,542.46

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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.