Home / 21,006.73-28,991.28-12,056.23

Finding the Fourth Proportional to 21,006.73, 28,991.28 and 12,056.23

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Solution

The fourth proportional to 21,006.73, 28,991.28 and 12,056.23 is: 16,638.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,006.73 : 28,991.28 = 12,056.23 : x
  2. Step 2: Convert to fraction form
    21,006.73/28,991.28 = 12,056.23/x
  3. Step 3: Cross multiply
    21,006.73x = 28,991.28 × 12,056.23
  4. Step 4: Simplify right side
    21,006.73x = 349,525,539.67
  5. Step 5: Solve for x
    x = 349,525,539.67/21,006.73
  6. Step 6: Final answer
    x = 16,638.74

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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.