Home / 19,516.47-29,278.75-7,830.60

Finding the Fourth Proportional to 19,516.47, 29,278.75 and 7,830.60

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Solution

The fourth proportional to 19,516.47, 29,278.75 and 7,830.60 is: 11,747.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,516.47 : 29,278.75 = 7,830.60 : x
  2. Step 2: Convert to fraction form
    19,516.47/29,278.75 = 7,830.60/x
  3. Step 3: Cross multiply
    19,516.47x = 29,278.75 × 7,830.60
  4. Step 4: Simplify right side
    19,516.47x = 229,270,141.98
  5. Step 5: Solve for x
    x = 229,270,141.98/19,516.47
  6. Step 6: Final answer
    x = 11,747.52

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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.