Home / 19,400.40-29,129.40-13,582.80

Finding the Fourth Proportional to 19,400.40, 29,129.40 and 13,582.80

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Solution

The fourth proportional to 19,400.40, 29,129.40 and 13,582.80 is: 20,394.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,400.40 : 29,129.40 = 13,582.80 : x
  2. Step 2: Convert to fraction form
    19,400.40/29,129.40 = 13,582.80/x
  3. Step 3: Cross multiply
    19,400.40x = 29,129.40 × 13,582.80
  4. Step 4: Simplify right side
    19,400.40x = 395,658,814.32
  5. Step 5: Solve for x
    x = 395,658,814.32/19,400.40
  6. Step 6: Final answer
    x = 20,394.36

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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.