Home / 21,834.60-30,141.21-13,775.51

Finding the Fourth Proportional to 21,834.60, 30,141.21 and 13,775.51

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Solution

The fourth proportional to 21,834.60, 30,141.21 and 13,775.51 is: 19,016.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,834.60 : 30,141.21 = 13,775.51 : x
  2. Step 2: Convert to fraction form
    21,834.60/30,141.21 = 13,775.51/x
  3. Step 3: Cross multiply
    21,834.60x = 30,141.21 × 13,775.51
  4. Step 4: Simplify right side
    21,834.60x = 415,210,389.06
  5. Step 5: Solve for x
    x = 415,210,389.06/21,834.60
  6. Step 6: Final answer
    x = 19,016.17

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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.