Home / 19,168.80-28,706.40-15,822.72

Finding the Fourth Proportional to 19,168.80, 28,706.40 and 15,822.72

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Solution

The fourth proportional to 19,168.80, 28,706.40 and 15,822.72 is: 23,695.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,168.80 : 28,706.40 = 15,822.72 : x
  2. Step 2: Convert to fraction form
    19,168.80/28,706.40 = 15,822.72/x
  3. Step 3: Cross multiply
    19,168.80x = 28,706.40 × 15,822.72
  4. Step 4: Simplify right side
    19,168.80x = 454,213,329.41
  5. Step 5: Solve for x
    x = 454,213,329.41/19,168.80
  6. Step 6: Final answer
    x = 23,695.45

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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.