Home / 13,203.84-18,222.72-8,423.91

Finding the Fourth Proportional to 13,203.84, 18,222.72 and 8,423.91

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Solution

The fourth proportional to 13,203.84, 18,222.72 and 8,423.91 is: 11,625.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,203.84 : 18,222.72 = 8,423.91 : x
  2. Step 2: Convert to fraction form
    13,203.84/18,222.72 = 8,423.91/x
  3. Step 3: Cross multiply
    13,203.84x = 18,222.72 × 8,423.91
  4. Step 4: Simplify right side
    13,203.84x = 153,506,553.24
  5. Step 5: Solve for x
    x = 153,506,553.24/13,203.84
  6. Step 6: Final answer
    x = 11,625.90

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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.