Home / 21,311.98-29,409.95-12,358.91

Finding the Fourth Proportional to 21,311.98, 29,409.95 and 12,358.91

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Solution

The fourth proportional to 21,311.98, 29,409.95 and 12,358.91 is: 17,054.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,311.98 : 29,409.95 = 12,358.91 : x
  2. Step 2: Convert to fraction form
    21,311.98/29,409.95 = 12,358.91/x
  3. Step 3: Cross multiply
    21,311.98x = 29,409.95 × 12,358.91
  4. Step 4: Simplify right side
    21,311.98x = 363,475,029.58
  5. Step 5: Solve for x
    x = 363,475,029.58/21,311.98
  6. Step 6: Final answer
    x = 17,054.96

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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.