Home / 28,315.72-39,080.52-16,386.36

Finding the Fourth Proportional to 28,315.72, 39,080.52 and 16,386.36

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Solution

The fourth proportional to 28,315.72, 39,080.52 and 16,386.36 is: 22,615.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,315.72 : 39,080.52 = 16,386.36 : x
  2. Step 2: Convert to fraction form
    28,315.72/39,080.52 = 16,386.36/x
  3. Step 3: Cross multiply
    28,315.72x = 39,080.52 × 16,386.36
  4. Step 4: Simplify right side
    28,315.72x = 640,387,469.71
  5. Step 5: Solve for x
    x = 640,387,469.71/28,315.72
  6. Step 6: Final answer
    x = 22,615.97

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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.