Home / 20,964.29-28,920.54-13,009.07

Finding the Fourth Proportional to 20,964.29, 28,920.54 and 13,009.07

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Solution

The fourth proportional to 20,964.29, 28,920.54 and 13,009.07 is: 17,946.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,964.29 : 28,920.54 = 13,009.07 : x
  2. Step 2: Convert to fraction form
    20,964.29/28,920.54 = 13,009.07/x
  3. Step 3: Cross multiply
    20,964.29x = 28,920.54 × 13,009.07
  4. Step 4: Simplify right side
    20,964.29x = 376,229,450.38
  5. Step 5: Solve for x
    x = 376,229,450.38/20,964.29
  6. Step 6: Final answer
    x = 17,946.21

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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.