Home / 21,780.38-32,673.36-10,687.34

Finding the Fourth Proportional to 21,780.38, 32,673.36 and 10,687.34

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Solution

The fourth proportional to 21,780.38, 32,673.36 and 10,687.34 is: 16,032.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,780.38 : 32,673.36 = 10,687.34 : x
  2. Step 2: Convert to fraction form
    21,780.38/32,673.36 = 10,687.34/x
  3. Step 3: Cross multiply
    21,780.38x = 32,673.36 × 10,687.34
  4. Step 4: Simplify right side
    21,780.38x = 349,191,307.26
  5. Step 5: Solve for x
    x = 349,191,307.26/21,780.38
  6. Step 6: Final answer
    x = 16,032.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.