Home / 15,476.49-21,357.23-8,402.85

Finding the Fourth Proportional to 15,476.49, 21,357.23 and 8,402.85

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Solution

The fourth proportional to 15,476.49, 21,357.23 and 8,402.85 is: 11,595.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,476.49 : 21,357.23 = 8,402.85 : x
  2. Step 2: Convert to fraction form
    15,476.49/21,357.23 = 8,402.85/x
  3. Step 3: Cross multiply
    15,476.49x = 21,357.23 × 8,402.85
  4. Step 4: Simplify right side
    15,476.49x = 179,461,558.09
  5. Step 5: Solve for x
    x = 179,461,558.09/15,476.49
  6. Step 6: Final answer
    x = 11,595.75

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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.