Home / 21,315.98-29,415.46-12,362.92

Finding the Fourth Proportional to 21,315.98, 29,415.46 and 12,362.92

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Solution

The fourth proportional to 21,315.98, 29,415.46 and 12,362.92 is: 17,060.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,315.98 : 29,415.46 = 12,362.92 : x
  2. Step 2: Convert to fraction form
    21,315.98/29,415.46 = 12,362.92/x
  3. Step 3: Cross multiply
    21,315.98x = 29,415.46 × 12,362.92
  4. Step 4: Simplify right side
    21,315.98x = 363,660,978.74
  5. Step 5: Solve for x
    x = 363,660,978.74/21,315.98
  6. Step 6: Final answer
    x = 17,060.49

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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.