Home / 19,780.32-29,669.64-5,740.32

Finding the Fourth Proportional to 19,780.32, 29,669.64 and 5,740.32

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Solution

The fourth proportional to 19,780.32, 29,669.64 and 5,740.32 is: 8,610.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,780.32 : 29,669.64 = 5,740.32 : x
  2. Step 2: Convert to fraction form
    19,780.32/29,669.64 = 5,740.32/x
  3. Step 3: Cross multiply
    19,780.32x = 29,669.64 × 5,740.32
  4. Step 4: Simplify right side
    19,780.32x = 170,313,227.88
  5. Step 5: Solve for x
    x = 170,313,227.88/19,780.32
  6. Step 6: Final answer
    x = 8,610.24

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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.