Home / 21,056.84-29,057.64-12,671.72

Finding the Fourth Proportional to 21,056.84, 29,057.64 and 12,671.72

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Solution

The fourth proportional to 21,056.84, 29,057.64 and 12,671.72 is: 17,486.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,056.84 : 29,057.64 = 12,671.72 : x
  2. Step 2: Convert to fraction form
    21,056.84/29,057.64 = 12,671.72/x
  3. Step 3: Cross multiply
    21,056.84x = 29,057.64 × 12,671.72
  4. Step 4: Simplify right side
    21,056.84x = 368,210,277.94
  5. Step 5: Solve for x
    x = 368,210,277.94/21,056.84
  6. Step 6: Final answer
    x = 17,486.49

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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.