Home / 21,323.86-29,438.82-14,969.95

Finding the Fourth Proportional to 21,323.86, 29,438.82 and 14,969.95

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Solution

The fourth proportional to 21,323.86, 29,438.82 and 14,969.95 is: 20,666.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,323.86 : 29,438.82 = 14,969.95 : x
  2. Step 2: Convert to fraction form
    21,323.86/29,438.82 = 14,969.95/x
  3. Step 3: Cross multiply
    21,323.86x = 29,438.82 × 14,969.95
  4. Step 4: Simplify right side
    21,323.86x = 440,697,589.86
  5. Step 5: Solve for x
    x = 440,697,589.86/21,323.86
  6. Step 6: Final answer
    x = 20,666.88

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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.