Home / 21,175.36-31,782.08-11,323.06

Finding the Fourth Proportional to 21,175.36, 31,782.08 and 11,323.06

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Solution

The fourth proportional to 21,175.36, 31,782.08 and 11,323.06 is: 16,994.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,175.36 : 31,782.08 = 11,323.06 : x
  2. Step 2: Convert to fraction form
    21,175.36/31,782.08 = 11,323.06/x
  3. Step 3: Cross multiply
    21,175.36x = 31,782.08 × 11,323.06
  4. Step 4: Simplify right side
    21,175.36x = 359,870,398.76
  5. Step 5: Solve for x
    x = 359,870,398.76/21,175.36
  6. Step 6: Final answer
    x = 16,994.77

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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.