Home / 15,895.32-21,935.88-8,821.50

Finding the Fourth Proportional to 15,895.32, 21,935.88 and 8,821.50

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Solution

The fourth proportional to 15,895.32, 21,935.88 and 8,821.50 is: 12,173.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,895.32 : 21,935.88 = 8,821.50 : x
  2. Step 2: Convert to fraction form
    15,895.32/21,935.88 = 8,821.50/x
  3. Step 3: Cross multiply
    15,895.32x = 21,935.88 × 8,821.50
  4. Step 4: Simplify right side
    15,895.32x = 193,507,365.42
  5. Step 5: Solve for x
    x = 193,507,365.42/15,895.32
  6. Step 6: Final answer
    x = 12,173.86

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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.