Home / 28,402.32-42,574.62-11,771.40

Finding the Fourth Proportional to 28,402.32, 42,574.62 and 11,771.40

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Solution

The fourth proportional to 28,402.32, 42,574.62 and 11,771.40 is: 17,645.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,402.32 : 42,574.62 = 11,771.40 : x
  2. Step 2: Convert to fraction form
    28,402.32/42,574.62 = 11,771.40/x
  3. Step 3: Cross multiply
    28,402.32x = 42,574.62 × 11,771.40
  4. Step 4: Simplify right side
    28,402.32x = 501,162,881.87
  5. Step 5: Solve for x
    x = 501,162,881.87/28,402.32
  6. Step 6: Final answer
    x = 17,645.14

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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.