Home / 21,488.47-29,653.63-11,927.80

Finding the Fourth Proportional to 21,488.47, 29,653.63 and 11,927.80

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Solution

The fourth proportional to 21,488.47, 29,653.63 and 11,927.80 is: 16,460.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,488.47 : 29,653.63 = 11,927.80 : x
  2. Step 2: Convert to fraction form
    21,488.47/29,653.63 = 11,927.80/x
  3. Step 3: Cross multiply
    21,488.47x = 29,653.63 × 11,927.80
  4. Step 4: Simplify right side
    21,488.47x = 353,702,567.91
  5. Step 5: Solve for x
    x = 353,702,567.91/21,488.47
  6. Step 6: Final answer
    x = 16,460.11

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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.