Home / 12,953.58-19,430.38-5,167.86

Finding the Fourth Proportional to 12,953.58, 19,430.38 and 5,167.86

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Solution

The fourth proportional to 12,953.58, 19,430.38 and 5,167.86 is: 7,751.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,953.58 : 19,430.38 = 5,167.86 : x
  2. Step 2: Convert to fraction form
    12,953.58/19,430.38 = 5,167.86/x
  3. Step 3: Cross multiply
    12,953.58x = 19,430.38 × 5,167.86
  4. Step 4: Simplify right side
    12,953.58x = 100,413,470.67
  5. Step 5: Solve for x
    x = 100,413,470.67/12,953.58
  6. Step 6: Final answer
    x = 7,751.79

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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.