Home / 15,816.21-21,827.49-8,742.48

Finding the Fourth Proportional to 15,816.21, 21,827.49 and 8,742.48

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Solution

The fourth proportional to 15,816.21, 21,827.49 and 8,742.48 is: 12,065.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,816.21 : 21,827.49 = 8,742.48 : x
  2. Step 2: Convert to fraction form
    15,816.21/21,827.49 = 8,742.48/x
  3. Step 3: Cross multiply
    15,816.21x = 21,827.49 × 8,742.48
  4. Step 4: Simplify right side
    15,816.21x = 190,826,394.78
  5. Step 5: Solve for x
    x = 190,826,394.78/15,816.21
  6. Step 6: Final answer
    x = 12,065.24

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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.