Home / 13,391.01-18,479.60-7,423.07

Finding the Fourth Proportional to 13,391.01, 18,479.60 and 7,423.07

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Solution

The fourth proportional to 13,391.01, 18,479.60 and 7,423.07 is: 10,243.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,391.01 : 18,479.60 = 7,423.07 : x
  2. Step 2: Convert to fraction form
    13,391.01/18,479.60 = 7,423.07/x
  3. Step 3: Cross multiply
    13,391.01x = 18,479.60 × 7,423.07
  4. Step 4: Simplify right side
    13,391.01x = 137,175,364.37
  5. Step 5: Solve for x
    x = 137,175,364.37/13,391.01
  6. Step 6: Final answer
    x = 10,243.84

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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.