Home / 28,127.70-38,816.27-15,380.94

Finding the Fourth Proportional to 28,127.70, 38,816.27 and 15,380.94

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Solution

The fourth proportional to 28,127.70, 38,816.27 and 15,380.94 is: 21,225.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,127.70 : 38,816.27 = 15,380.94 : x
  2. Step 2: Convert to fraction form
    28,127.70/38,816.27 = 15,380.94/x
  3. Step 3: Cross multiply
    28,127.70x = 38,816.27 × 15,380.94
  4. Step 4: Simplify right side
    28,127.70x = 597,030,642.99
  5. Step 5: Solve for x
    x = 597,030,642.99/28,127.70
  6. Step 6: Final answer
    x = 21,225.72

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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.