Home / 15,801.64-21,805.81-8,727.91

Finding the Fourth Proportional to 15,801.64, 21,805.81 and 8,727.91

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Solution

The fourth proportional to 15,801.64, 21,805.81 and 8,727.91 is: 12,044.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,801.64 : 21,805.81 = 8,727.91 : x
  2. Step 2: Convert to fraction form
    15,801.64/21,805.81 = 8,727.91/x
  3. Step 3: Cross multiply
    15,801.64x = 21,805.81 × 8,727.91
  4. Step 4: Simplify right side
    15,801.64x = 190,319,147.16
  5. Step 5: Solve for x
    x = 190,319,147.16/15,801.64
  6. Step 6: Final answer
    x = 12,044.27

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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.