Home / 21,725.66-32,643.08-13,831.70

Finding the Fourth Proportional to 21,725.66, 32,643.08 and 13,831.70

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Solution

The fourth proportional to 21,725.66, 32,643.08 and 13,831.70 is: 20,782.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,725.66 : 32,643.08 = 13,831.70 : x
  2. Step 2: Convert to fraction form
    21,725.66/32,643.08 = 13,831.70/x
  3. Step 3: Cross multiply
    21,725.66x = 32,643.08 × 13,831.70
  4. Step 4: Simplify right side
    21,725.66x = 451,509,070.23
  5. Step 5: Solve for x
    x = 451,509,070.23/21,725.66
  6. Step 6: Final answer
    x = 20,782.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.