Home / 13,284.20-18,332.05-7,315.74

Finding the Fourth Proportional to 13,284.20, 18,332.05 and 7,315.74

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Solution

The fourth proportional to 13,284.20, 18,332.05 and 7,315.74 is: 10,095.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,284.20 : 18,332.05 = 7,315.74 : x
  2. Step 2: Convert to fraction form
    13,284.20/18,332.05 = 7,315.74/x
  3. Step 3: Cross multiply
    13,284.20x = 18,332.05 × 7,315.74
  4. Step 4: Simplify right side
    13,284.20x = 134,112,451.87
  5. Step 5: Solve for x
    x = 134,112,451.87/13,284.20
  6. Step 6: Final answer
    x = 10,095.64

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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.