Home / 14,403.48-19,879.38-8,434.80

Finding the Fourth Proportional to 14,403.48, 19,879.38 and 8,434.80

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Solution

The fourth proportional to 14,403.48, 19,879.38 and 8,434.80 is: 11,641.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,403.48 : 19,879.38 = 8,434.80 : x
  2. Step 2: Convert to fraction form
    14,403.48/19,879.38 = 8,434.80/x
  3. Step 3: Cross multiply
    14,403.48x = 19,879.38 × 8,434.80
  4. Step 4: Simplify right side
    14,403.48x = 167,678,594.42
  5. Step 5: Solve for x
    x = 167,678,594.42/14,403.48
  6. Step 6: Final answer
    x = 11,641.53

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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.