Home / 21,176.46-29,001.05-20,899.68

Finding the Fourth Proportional to 21,176.46, 29,001.05 and 20,899.68

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Solution

The fourth proportional to 21,176.46, 29,001.05 and 20,899.68 is: 28,622.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,176.46 : 29,001.05 = 20,899.68 : x
  2. Step 2: Convert to fraction form
    21,176.46/29,001.05 = 20,899.68/x
  3. Step 3: Cross multiply
    21,176.46x = 29,001.05 × 20,899.68
  4. Step 4: Simplify right side
    21,176.46x = 606,112,560.17
  5. Step 5: Solve for x
    x = 606,112,560.17/21,176.46
  6. Step 6: Final answer
    x = 28,622.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.