Home / 15,281.11-21,087.84-8,475.58

Finding the Fourth Proportional to 15,281.11, 21,087.84 and 8,475.58

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Solution

The fourth proportional to 15,281.11, 21,087.84 and 8,475.58 is: 11,696.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,281.11 : 21,087.84 = 8,475.58 : x
  2. Step 2: Convert to fraction form
    15,281.11/21,087.84 = 8,475.58/x
  3. Step 3: Cross multiply
    15,281.11x = 21,087.84 × 8,475.58
  4. Step 4: Simplify right side
    15,281.11x = 178,731,674.95
  5. Step 5: Solve for x
    x = 178,731,674.95/15,281.11
  6. Step 6: Final answer
    x = 11,696.25

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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.