Home / 15,710.32-21,679.95-8,636.59

Finding the Fourth Proportional to 15,710.32, 21,679.95 and 8,636.59

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Solution

The fourth proportional to 15,710.32, 21,679.95 and 8,636.59 is: 11,918.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,710.32 : 21,679.95 = 8,636.59 : x
  2. Step 2: Convert to fraction form
    15,710.32/21,679.95 = 8,636.59/x
  3. Step 3: Cross multiply
    15,710.32x = 21,679.95 × 8,636.59
  4. Step 4: Simplify right side
    15,710.32x = 187,240,839.37
  5. Step 5: Solve for x
    x = 187,240,839.37/15,710.32
  6. Step 6: Final answer
    x = 11,918.33

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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.