Home / 13,351.86-18,423.93-7,382.70

Finding the Fourth Proportional to 13,351.86, 18,423.93 and 7,382.70

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Solution

The fourth proportional to 13,351.86, 18,423.93 and 7,382.70 is: 10,187.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,351.86 : 18,423.93 = 7,382.70 : x
  2. Step 2: Convert to fraction form
    13,351.86/18,423.93 = 7,382.70/x
  3. Step 3: Cross multiply
    13,351.86x = 18,423.93 × 7,382.70
  4. Step 4: Simplify right side
    13,351.86x = 136,018,348.01
  5. Step 5: Solve for x
    x = 136,018,348.01/13,351.86
  6. Step 6: Final answer
    x = 10,187.22

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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.