Home / 28,087.04-42,138.36-12,289.24

Finding the Fourth Proportional to 28,087.04, 42,138.36 and 12,289.24

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Solution

The fourth proportional to 28,087.04, 42,138.36 and 12,289.24 is: 18,437.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,087.04 : 42,138.36 = 12,289.24 : x
  2. Step 2: Convert to fraction form
    28,087.04/42,138.36 = 12,289.24/x
  3. Step 3: Cross multiply
    28,087.04x = 42,138.36 × 12,289.24
  4. Step 4: Simplify right side
    28,087.04x = 517,848,419.25
  5. Step 5: Solve for x
    x = 517,848,419.25/28,087.04
  6. Step 6: Final answer
    x = 18,437.27

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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.