Home / 15,314.83-21,154.74-11,356.36

Finding the Fourth Proportional to 15,314.83, 21,154.74 and 11,356.36

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Solution

The fourth proportional to 15,314.83, 21,154.74 and 11,356.36 is: 15,686.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,314.83 : 21,154.74 = 11,356.36 : x
  2. Step 2: Convert to fraction form
    15,314.83/21,154.74 = 11,356.36/x
  3. Step 3: Cross multiply
    15,314.83x = 21,154.74 × 11,356.36
  4. Step 4: Simplify right side
    15,314.83x = 240,240,843.15
  5. Step 5: Solve for x
    x = 240,240,843.15/15,314.83
  6. Step 6: Final answer
    x = 15,686.81

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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.