Home / 15,476.45-21,357.74-8,402.87

Finding the Fourth Proportional to 15,476.45, 21,357.74 and 8,402.87

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Solution

The fourth proportional to 15,476.45, 21,357.74 and 8,402.87 is: 11,596.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,476.45 : 21,357.74 = 8,402.87 : x
  2. Step 2: Convert to fraction form
    15,476.45/21,357.74 = 8,402.87/x
  3. Step 3: Cross multiply
    15,476.45x = 21,357.74 × 8,402.87
  4. Step 4: Simplify right side
    15,476.45x = 179,466,163.91
  5. Step 5: Solve for x
    x = 179,466,163.91/15,476.45
  6. Step 6: Final answer
    x = 11,596.08

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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.