Home / 21,415.41-29,561.76-14,518.15

Finding the Fourth Proportional to 21,415.41, 29,561.76 and 14,518.15

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Solution

The fourth proportional to 21,415.41, 29,561.76 and 14,518.15 is: 20,040.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,415.41 : 29,561.76 = 14,518.15 : x
  2. Step 2: Convert to fraction form
    21,415.41/29,561.76 = 14,518.15/x
  3. Step 3: Cross multiply
    21,415.41x = 29,561.76 × 14,518.15
  4. Step 4: Simplify right side
    21,415.41x = 429,182,065.94
  5. Step 5: Solve for x
    x = 429,182,065.94/21,415.41
  6. Step 6: Final answer
    x = 20,040.81

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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.