Home / 15,153.69-20,910.59-8,439.94

Finding the Fourth Proportional to 15,153.69, 20,910.59 and 8,439.94

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Solution

The fourth proportional to 15,153.69, 20,910.59 and 8,439.94 is: 11,646.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,153.69 : 20,910.59 = 8,439.94 : x
  2. Step 2: Convert to fraction form
    15,153.69/20,910.59 = 8,439.94/x
  3. Step 3: Cross multiply
    15,153.69x = 20,910.59 × 8,439.94
  4. Step 4: Simplify right side
    15,153.69x = 176,484,124.96
  5. Step 5: Solve for x
    x = 176,484,124.96/15,153.69
  6. Step 6: Final answer
    x = 11,646.28

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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.