Home / 20,235.70-27,913.20-15,752.35

Finding the Fourth Proportional to 20,235.70, 27,913.20 and 15,752.35

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Solution

The fourth proportional to 20,235.70, 27,913.20 and 15,752.35 is: 21,728.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,235.70 : 27,913.20 = 15,752.35 : x
  2. Step 2: Convert to fraction form
    20,235.70/27,913.20 = 15,752.35/x
  3. Step 3: Cross multiply
    20,235.70x = 27,913.20 × 15,752.35
  4. Step 4: Simplify right side
    20,235.70x = 439,698,496.02
  5. Step 5: Solve for x
    x = 439,698,496.02/20,235.70
  6. Step 6: Final answer
    x = 21,728.85

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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.