Home / 21,409.98-29,574-16,435.66

Finding the Fourth Proportional to 21,409.98, 29,574 and 16,435.66

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Solution

The fourth proportional to 21,409.98, 29,574 and 16,435.66 is: 22,702.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,409.98 : 29,574 = 16,435.66 : x
  2. Step 2: Convert to fraction form
    21,409.98/29,574 = 16,435.66/x
  3. Step 3: Cross multiply
    21,409.98x = 29,574 × 16,435.66
  4. Step 4: Simplify right side
    21,409.98x = 486,068,208.84
  5. Step 5: Solve for x
    x = 486,068,208.84/21,409.98
  6. Step 6: Final answer
    x = 22,702.88

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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.