Home / 28,005.18-42,018.66-10,476.36

Finding the Fourth Proportional to 28,005.18, 42,018.66 and 10,476.36

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Solution

The fourth proportional to 28,005.18, 42,018.66 and 10,476.36 is: 15,718.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,005.18 : 42,018.66 = 10,476.36 : x
  2. Step 2: Convert to fraction form
    28,005.18/42,018.66 = 10,476.36/x
  3. Step 3: Cross multiply
    28,005.18x = 42,018.66 × 10,476.36
  4. Step 4: Simplify right side
    28,005.18x = 440,202,608.88
  5. Step 5: Solve for x
    x = 440,202,608.88/28,005.18
  6. Step 6: Final answer
    x = 15,718.61

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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.