Home / 14,177.78-19,565.98-7,890.56

Finding the Fourth Proportional to 14,177.78, 19,565.98 and 7,890.56

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Solution

The fourth proportional to 14,177.78, 19,565.98 and 7,890.56 is: 10,889.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,177.78 : 19,565.98 = 7,890.56 : x
  2. Step 2: Convert to fraction form
    14,177.78/19,565.98 = 7,890.56/x
  3. Step 3: Cross multiply
    14,177.78x = 19,565.98 × 7,890.56
  4. Step 4: Simplify right side
    14,177.78x = 154,386,421.59
  5. Step 5: Solve for x
    x = 154,386,421.59/14,177.78
  6. Step 6: Final answer
    x = 10,889.33

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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.