Home / 21,970.62-30,317.03-12,409.49

Finding the Fourth Proportional to 21,970.62, 30,317.03 and 12,409.49

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Solution

The fourth proportional to 21,970.62, 30,317.03 and 12,409.49 is: 17,123.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,970.62 : 30,317.03 = 12,409.49 : x
  2. Step 2: Convert to fraction form
    21,970.62/30,317.03 = 12,409.49/x
  3. Step 3: Cross multiply
    21,970.62x = 30,317.03 × 12,409.49
  4. Step 4: Simplify right side
    21,970.62x = 376,218,666.98
  5. Step 5: Solve for x
    x = 376,218,666.98/21,970.62
  6. Step 6: Final answer
    x = 17,123.72

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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.