Home / 28,113.12-42,133.32-11,453.76

Finding the Fourth Proportional to 28,113.12, 42,133.32 and 11,453.76

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Solution

The fourth proportional to 28,113.12, 42,133.32 and 11,453.76 is: 17,165.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,113.12 : 42,133.32 = 11,453.76 : x
  2. Step 2: Convert to fraction form
    28,113.12/42,133.32 = 11,453.76/x
  3. Step 3: Cross multiply
    28,113.12x = 42,133.32 × 11,453.76
  4. Step 4: Simplify right side
    28,113.12x = 482,584,935.28
  5. Step 5: Solve for x
    x = 482,584,935.28/28,113.12
  6. Step 6: Final answer
    x = 17,165.83

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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.