Home / 21,335.69-29,443.02-11,775.66

Finding the Fourth Proportional to 21,335.69, 29,443.02 and 11,775.66

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Solution

The fourth proportional to 21,335.69, 29,443.02 and 11,775.66 is: 16,250.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,335.69 : 29,443.02 = 11,775.66 : x
  2. Step 2: Convert to fraction form
    21,335.69/29,443.02 = 11,775.66/x
  3. Step 3: Cross multiply
    21,335.69x = 29,443.02 × 11,775.66
  4. Step 4: Simplify right side
    21,335.69x = 346,710,992.89
  5. Step 5: Solve for x
    x = 346,710,992.89/21,335.69
  6. Step 6: Final answer
    x = 16,250.29

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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.