Home / 13,448.69-18,557.77-7,479.40

Finding the Fourth Proportional to 13,448.69, 18,557.77 and 7,479.40

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Solution

The fourth proportional to 13,448.69, 18,557.77 and 7,479.40 is: 10,320.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,448.69 : 18,557.77 = 7,479.40 : x
  2. Step 2: Convert to fraction form
    13,448.69/18,557.77 = 7,479.40/x
  3. Step 3: Cross multiply
    13,448.69x = 18,557.77 × 7,479.40
  4. Step 4: Simplify right side
    13,448.69x = 138,800,984.94
  5. Step 5: Solve for x
    x = 138,800,984.94/13,448.69
  6. Step 6: Final answer
    x = 10,320.78

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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.