Home / 13,351.18-18,423.80-7,382.50

Finding the Fourth Proportional to 13,351.18, 18,423.80 and 7,382.50

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Solution

The fourth proportional to 13,351.18, 18,423.80 and 7,382.50 is: 10,187.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,351.18 : 18,423.80 = 7,382.50 : x
  2. Step 2: Convert to fraction form
    13,351.18/18,423.80 = 7,382.50/x
  3. Step 3: Cross multiply
    13,351.18x = 18,423.80 × 7,382.50
  4. Step 4: Simplify right side
    13,351.18x = 136,013,703.50
  5. Step 5: Solve for x
    x = 136,013,703.50/13,351.18
  6. Step 6: Final answer
    x = 10,187.39

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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.