Home / 15,281.14-21,087.78-8,566.76

Finding the Fourth Proportional to 15,281.14, 21,087.78 and 8,566.76

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Solution

The fourth proportional to 15,281.14, 21,087.78 and 8,566.76 is: 11,822.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,281.14 : 21,087.78 = 8,566.76 : x
  2. Step 2: Convert to fraction form
    15,281.14/21,087.78 = 8,566.76/x
  3. Step 3: Cross multiply
    15,281.14x = 21,087.78 × 8,566.76
  4. Step 4: Simplify right side
    15,281.14x = 180,653,950.19
  5. Step 5: Solve for x
    x = 180,653,950.19/15,281.14
  6. Step 6: Final answer
    x = 11,822.02

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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.