Home / 20,764.50-28,667.97-13,325.46

Finding the Fourth Proportional to 20,764.50, 28,667.97 and 13,325.46

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Solution

The fourth proportional to 20,764.50, 28,667.97 and 13,325.46 is: 18,397.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,764.50 : 28,667.97 = 13,325.46 : x
  2. Step 2: Convert to fraction form
    20,764.50/28,667.97 = 13,325.46/x
  3. Step 3: Cross multiply
    20,764.50x = 28,667.97 × 13,325.46
  4. Step 4: Simplify right side
    20,764.50x = 382,013,887.52
  5. Step 5: Solve for x
    x = 382,013,887.52/20,764.50
  6. Step 6: Final answer
    x = 18,397.45

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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.