Home / 19,664.80-29,479.92-9,289.12

Finding the Fourth Proportional to 19,664.80, 29,479.92 and 9,289.12

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Solution

The fourth proportional to 19,664.80, 29,479.92 and 9,289.12 is: 13,925.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,664.80 : 29,479.92 = 9,289.12 : x
  2. Step 2: Convert to fraction form
    19,664.80/29,479.92 = 9,289.12/x
  3. Step 3: Cross multiply
    19,664.80x = 29,479.92 × 9,289.12
  4. Step 4: Simplify right side
    19,664.80x = 273,842,514.47
  5. Step 5: Solve for x
    x = 273,842,514.47/19,664.80
  6. Step 6: Final answer
    x = 13,925.52

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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.