Home / 13,600.71-18,771.93-10,378.91

Finding the Fourth Proportional to 13,600.71, 18,771.93 and 10,378.91

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Solution

The fourth proportional to 13,600.71, 18,771.93 and 10,378.91 is: 14,325.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,600.71 : 18,771.93 = 10,378.91 : x
  2. Step 2: Convert to fraction form
    13,600.71/18,771.93 = 10,378.91/x
  3. Step 3: Cross multiply
    13,600.71x = 18,771.93 × 10,378.91
  4. Step 4: Simplify right side
    13,600.71x = 194,832,039.22
  5. Step 5: Solve for x
    x = 194,832,039.22/13,600.71
  6. Step 6: Final answer
    x = 14,325.13

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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.