Home / 19,431.48-26,814.42-11,470.80

Finding the Fourth Proportional to 19,431.48, 26,814.42 and 11,470.80

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Solution

The fourth proportional to 19,431.48, 26,814.42 and 11,470.80 is: 15,829.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,431.48 : 26,814.42 = 11,470.80 : x
  2. Step 2: Convert to fraction form
    19,431.48/26,814.42 = 11,470.80/x
  3. Step 3: Cross multiply
    19,431.48x = 26,814.42 × 11,470.80
  4. Step 4: Simplify right side
    19,431.48x = 307,582,848.94
  5. Step 5: Solve for x
    x = 307,582,848.94/19,431.48
  6. Step 6: Final answer
    x = 15,829.10

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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.