Home / 21,435.84-29,580.63-12,003.92

Finding the Fourth Proportional to 21,435.84, 29,580.63 and 12,003.92

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Solution

The fourth proportional to 21,435.84, 29,580.63 and 12,003.92 is: 16,564.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,435.84 : 29,580.63 = 12,003.92 : x
  2. Step 2: Convert to fraction form
    21,435.84/29,580.63 = 12,003.92/x
  3. Step 3: Cross multiply
    21,435.84x = 29,580.63 × 12,003.92
  4. Step 4: Simplify right side
    21,435.84x = 355,083,516.07
  5. Step 5: Solve for x
    x = 355,083,516.07/21,435.84
  6. Step 6: Final answer
    x = 16,564.95

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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.