Home / 18,994-26,211.72-12,721.36

Finding the Fourth Proportional to 18,994, 26,211.72 and 12,721.36

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Solution

The fourth proportional to 18,994, 26,211.72 and 12,721.36 is: 17,555.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,994 : 26,211.72 = 12,721.36 : x
  2. Step 2: Convert to fraction form
    18,994/26,211.72 = 12,721.36/x
  3. Step 3: Cross multiply
    18,994x = 26,211.72 × 12,721.36
  4. Step 4: Simplify right side
    18,994x = 333,448,726.34
  5. Step 5: Solve for x
    x = 333,448,726.34/18,994
  6. Step 6: Final answer
    x = 17,555.48

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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.