Home / 28,130.88-42,180.33-11,471.40

Finding the Fourth Proportional to 28,130.88, 42,180.33 and 11,471.40

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Solution

The fourth proportional to 28,130.88, 42,180.33 and 11,471.40 is: 17,200.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,130.88 : 42,180.33 = 11,471.40 : x
  2. Step 2: Convert to fraction form
    28,130.88/42,180.33 = 11,471.40/x
  3. Step 3: Cross multiply
    28,130.88x = 42,180.33 × 11,471.40
  4. Step 4: Simplify right side
    28,130.88x = 483,867,437.56
  5. Step 5: Solve for x
    x = 483,867,437.56/28,130.88
  6. Step 6: Final answer
    x = 17,200.58

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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.