Home / 21,335.72-29,443.08-11,775.70

Finding the Fourth Proportional to 21,335.72, 29,443.08 and 11,775.70

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Solution

The fourth proportional to 21,335.72, 29,443.08 and 11,775.70 is: 16,250.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,335.72 : 29,443.08 = 11,775.70 : x
  2. Step 2: Convert to fraction form
    21,335.72/29,443.08 = 11,775.70/x
  3. Step 3: Cross multiply
    21,335.72x = 29,443.08 × 11,775.70
  4. Step 4: Simplify right side
    21,335.72x = 346,712,803.55
  5. Step 5: Solve for x
    x = 346,712,803.55/21,335.72
  6. Step 6: Final answer
    x = 16,250.34

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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.