Home / 15,710.28-21,682.32-10,137.48

Finding the Fourth Proportional to 15,710.28, 21,682.32 and 10,137.48

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Solution

The fourth proportional to 15,710.28, 21,682.32 and 10,137.48 is: 13,991.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,710.28 : 21,682.32 = 10,137.48 : x
  2. Step 2: Convert to fraction form
    15,710.28/21,682.32 = 10,137.48/x
  3. Step 3: Cross multiply
    15,710.28x = 21,682.32 × 10,137.48
  4. Step 4: Simplify right side
    15,710.28x = 219,804,085.35
  5. Step 5: Solve for x
    x = 219,804,085.35/15,710.28
  6. Step 6: Final answer
    x = 13,991.10

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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.