Home / 28,384.91-39,161.77-18,320.04

Finding the Fourth Proportional to 28,384.91, 39,161.77 and 18,320.04

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Solution

The fourth proportional to 28,384.91, 39,161.77 and 18,320.04 is: 25,275.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,384.91 : 39,161.77 = 18,320.04 : x
  2. Step 2: Convert to fraction form
    28,384.91/39,161.77 = 18,320.04/x
  3. Step 3: Cross multiply
    28,384.91x = 39,161.77 × 18,320.04
  4. Step 4: Simplify right side
    28,384.91x = 717,444,956.09
  5. Step 5: Solve for x
    x = 717,444,956.09/28,384.91
  6. Step 6: Final answer
    x = 25,275.58

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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.