Home / 28,206.96-38,925.50-15,631.70

Finding the Fourth Proportional to 28,206.96, 38,925.50 and 15,631.70

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Solution

The fourth proportional to 28,206.96, 38,925.50 and 15,631.70 is: 21,571.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,206.96 : 38,925.50 = 15,631.70 : x
  2. Step 2: Convert to fraction form
    28,206.96/38,925.50 = 15,631.70/x
  3. Step 3: Cross multiply
    28,206.96x = 38,925.50 × 15,631.70
  4. Step 4: Simplify right side
    28,206.96x = 608,471,738.35
  5. Step 5: Solve for x
    x = 608,471,738.35/28,206.96
  6. Step 6: Final answer
    x = 21,571.69

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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.