Home / 28,348.77-39,117-17,015.79

Finding the Fourth Proportional to 28,348.77, 39,117 and 17,015.79

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Solution

The fourth proportional to 28,348.77, 39,117 and 17,015.79 is: 23,479.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,348.77 : 39,117 = 17,015.79 : x
  2. Step 2: Convert to fraction form
    28,348.77/39,117 = 17,015.79/x
  3. Step 3: Cross multiply
    28,348.77x = 39,117 × 17,015.79
  4. Step 4: Simplify right side
    28,348.77x = 665,606,657.43
  5. Step 5: Solve for x
    x = 665,606,657.43/28,348.77
  6. Step 6: Final answer
    x = 23,479.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.