Home / 13,428.77-18,529.49-8,393.81

Finding the Fourth Proportional to 13,428.77, 18,529.49 and 8,393.81

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Solution

The fourth proportional to 13,428.77, 18,529.49 and 8,393.81 is: 11,582.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428.77 : 18,529.49 = 8,393.81 : x
  2. Step 2: Convert to fraction form
    13,428.77/18,529.49 = 8,393.81/x
  3. Step 3: Cross multiply
    13,428.77x = 18,529.49 × 8,393.81
  4. Step 4: Simplify right side
    13,428.77x = 155,532,946.79
  5. Step 5: Solve for x
    x = 155,532,946.79/13,428.77
  6. Step 6: Final answer
    x = 11,582.07

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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.