Home / 21,488.45-29,653.59-11,927.78

Finding the Fourth Proportional to 21,488.45, 29,653.59 and 11,927.78

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Solution

The fourth proportional to 21,488.45, 29,653.59 and 11,927.78 is: 16,460.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,488.45 : 29,653.59 = 11,927.78 : x
  2. Step 2: Convert to fraction form
    21,488.45/29,653.59 = 11,927.78/x
  3. Step 3: Cross multiply
    21,488.45x = 29,653.59 × 11,927.78
  4. Step 4: Simplify right side
    21,488.45x = 353,701,349.46
  5. Step 5: Solve for x
    x = 353,701,349.46/21,488.45
  6. Step 6: Final answer
    x = 16,460.07

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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.