Home / 20,859.46-28,811.34-15,185.23

Finding the Fourth Proportional to 20,859.46, 28,811.34 and 15,185.23

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Solution

The fourth proportional to 20,859.46, 28,811.34 and 15,185.23 is: 20,974.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,859.46 : 28,811.34 = 15,185.23 : x
  2. Step 2: Convert to fraction form
    20,859.46/28,811.34 = 15,185.23/x
  3. Step 3: Cross multiply
    20,859.46x = 28,811.34 × 15,185.23
  4. Step 4: Simplify right side
    20,859.46x = 437,506,824.51
  5. Step 5: Solve for x
    x = 437,506,824.51/20,859.46
  6. Step 6: Final answer
    x = 20,974.02

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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.