Home / 21,767.60-30,038.28-11,831.60

Finding the Fourth Proportional to 21,767.60, 30,038.28 and 11,831.60

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Solution

The fourth proportional to 21,767.60, 30,038.28 and 11,831.60 is: 16,327.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,767.60 : 30,038.28 = 11,831.60 : x
  2. Step 2: Convert to fraction form
    21,767.60/30,038.28 = 11,831.60/x
  3. Step 3: Cross multiply
    21,767.60x = 30,038.28 × 11,831.60
  4. Step 4: Simplify right side
    21,767.60x = 355,400,913.65
  5. Step 5: Solve for x
    x = 355,400,913.65/21,767.60
  6. Step 6: Final answer
    x = 16,327.06

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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.