Home / 28,206.24-38,922.84-15,630

Finding the Fourth Proportional to 28,206.24, 38,922.84 and 15,630

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Solution

The fourth proportional to 28,206.24, 38,922.84 and 15,630 is: 21,568.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,206.24 : 38,922.84 = 15,630 : x
  2. Step 2: Convert to fraction form
    28,206.24/38,922.84 = 15,630/x
  3. Step 3: Cross multiply
    28,206.24x = 38,922.84 × 15,630
  4. Step 4: Simplify right side
    28,206.24x = 608,363,989.20
  5. Step 5: Solve for x
    x = 608,363,989.20/28,206.24
  6. Step 6: Final answer
    x = 21,568.42

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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.