Home / 19,343.50-28,970.25-18,811.40

Finding the Fourth Proportional to 19,343.50, 28,970.25 and 18,811.40

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Solution

The fourth proportional to 19,343.50, 28,970.25 and 18,811.40 is: 28,173.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,343.50 : 28,970.25 = 18,811.40 : x
  2. Step 2: Convert to fraction form
    19,343.50/28,970.25 = 18,811.40/x
  3. Step 3: Cross multiply
    19,343.50x = 28,970.25 × 18,811.40
  4. Step 4: Simplify right side
    19,343.50x = 544,970,960.85
  5. Step 5: Solve for x
    x = 544,970,960.85/19,343.50
  6. Step 6: Final answer
    x = 28,173.34

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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.