Home / 15,710.10-21,680.22-8,636.52

Finding the Fourth Proportional to 15,710.10, 21,680.22 and 8,636.52

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Solution

The fourth proportional to 15,710.10, 21,680.22 and 8,636.52 is: 11,918.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,710.10 : 21,680.22 = 8,636.52 : x
  2. Step 2: Convert to fraction form
    15,710.10/21,680.22 = 8,636.52/x
  3. Step 3: Cross multiply
    15,710.10x = 21,680.22 × 8,636.52
  4. Step 4: Simplify right side
    15,710.10x = 187,241,653.63
  5. Step 5: Solve for x
    x = 187,241,653.63/15,710.10
  6. Step 6: Final answer
    x = 11,918.55

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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.