Home / 19,721.61-29,582.69-11,011.95

Finding the Fourth Proportional to 19,721.61, 29,582.69 and 11,011.95

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Solution

The fourth proportional to 19,721.61, 29,582.69 and 11,011.95 is: 16,518.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,721.61 : 29,582.69 = 11,011.95 : x
  2. Step 2: Convert to fraction form
    19,721.61/29,582.69 = 11,011.95/x
  3. Step 3: Cross multiply
    19,721.61x = 29,582.69 × 11,011.95
  4. Step 4: Simplify right side
    19,721.61x = 325,763,048.09
  5. Step 5: Solve for x
    x = 325,763,048.09/19,721.61
  6. Step 6: Final answer
    x = 16,518.08

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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.