Home / 28,057.38-42,045.97-20,603.36

Finding the Fourth Proportional to 28,057.38, 42,045.97 and 20,603.36

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Solution

The fourth proportional to 28,057.38, 42,045.97 and 20,603.36 is: 30,875.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,057.38 : 42,045.97 = 20,603.36 : x
  2. Step 2: Convert to fraction form
    28,057.38/42,045.97 = 20,603.36/x
  3. Step 3: Cross multiply
    28,057.38x = 42,045.97 × 20,603.36
  4. Step 4: Simplify right side
    28,057.38x = 866,288,256.46
  5. Step 5: Solve for x
    x = 866,288,256.46/28,057.38
  6. Step 6: Final answer
    x = 30,875.59

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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.