Home / 20,859.32-28,799.16-18,617.24

Finding the Fourth Proportional to 20,859.32, 28,799.16 and 18,617.24

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Solution

The fourth proportional to 20,859.32, 28,799.16 and 18,617.24 is: 25,703.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,859.32 : 28,799.16 = 18,617.24 : x
  2. Step 2: Convert to fraction form
    20,859.32/28,799.16 = 18,617.24/x
  3. Step 3: Cross multiply
    20,859.32x = 28,799.16 × 18,617.24
  4. Step 4: Simplify right side
    20,859.32x = 536,160,873.52
  5. Step 5: Solve for x
    x = 536,160,873.52/20,859.32
  6. Step 6: Final answer
    x = 25,703.66

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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.