Home / 15,455.40-21,329.34-8,741.66

Finding the Fourth Proportional to 15,455.40, 21,329.34 and 8,741.66

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Solution

The fourth proportional to 15,455.40, 21,329.34 and 8,741.66 is: 12,063.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,455.40 : 21,329.34 = 8,741.66 : x
  2. Step 2: Convert to fraction form
    15,455.40/21,329.34 = 8,741.66/x
  3. Step 3: Cross multiply
    15,455.40x = 21,329.34 × 8,741.66
  4. Step 4: Simplify right side
    15,455.40x = 186,453,838.30
  5. Step 5: Solve for x
    x = 186,453,838.30/15,455.40
  6. Step 6: Final answer
    x = 12,063.99

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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.