Home / 28,191.34-38,900.91-15,612.94

Finding the Fourth Proportional to 28,191.34, 38,900.91 and 15,612.94

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Solution

The fourth proportional to 28,191.34, 38,900.91 and 15,612.94 is: 21,544.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,191.34 : 38,900.91 = 15,612.94 : x
  2. Step 2: Convert to fraction form
    28,191.34/38,900.91 = 15,612.94/x
  3. Step 3: Cross multiply
    28,191.34x = 38,900.91 × 15,612.94
  4. Step 4: Simplify right side
    28,191.34x = 607,357,573.78
  5. Step 5: Solve for x
    x = 607,357,573.78/28,191.34
  6. Step 6: Final answer
    x = 21,544.12

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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.