Home / 21,384.42-29,511.45-11,952.99

Finding the Fourth Proportional to 21,384.42, 29,511.45 and 11,952.99

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Solution

The fourth proportional to 21,384.42, 29,511.45 and 11,952.99 is: 16,495.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,384.42 : 29,511.45 = 11,952.99 : x
  2. Step 2: Convert to fraction form
    21,384.42/29,511.45 = 11,952.99/x
  3. Step 3: Cross multiply
    21,384.42x = 29,511.45 × 11,952.99
  4. Step 4: Simplify right side
    21,384.42x = 352,750,066.74
  5. Step 5: Solve for x
    x = 352,750,066.74/21,384.42
  6. Step 6: Final answer
    x = 16,495.66

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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.