Home / 21,315.98-29,415.47-12,362.91

Finding the Fourth Proportional to 21,315.98, 29,415.47 and 12,362.91

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Solution

The fourth proportional to 21,315.98, 29,415.47 and 12,362.91 is: 17,060.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,315.98 : 29,415.47 = 12,362.91 : x
  2. Step 2: Convert to fraction form
    21,315.98/29,415.47 = 12,362.91/x
  3. Step 3: Cross multiply
    21,315.98x = 29,415.47 × 12,362.91
  4. Step 4: Simplify right side
    21,315.98x = 363,660,808.22
  5. Step 5: Solve for x
    x = 363,660,808.22/21,315.98
  6. Step 6: Final answer
    x = 17,060.48

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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.