Home / 15,847.48-21,831.39-13,329.64

Finding the Fourth Proportional to 15,847.48, 21,831.39 and 13,329.64

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Solution

The fourth proportional to 15,847.48, 21,831.39 and 13,329.64 is: 18,362.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,847.48 : 21,831.39 = 13,329.64 : x
  2. Step 2: Convert to fraction form
    15,847.48/21,831.39 = 13,329.64/x
  3. Step 3: Cross multiply
    15,847.48x = 21,831.39 × 13,329.64
  4. Step 4: Simplify right side
    15,847.48x = 291,004,569.40
  5. Step 5: Solve for x
    x = 291,004,569.40/15,847.48
  6. Step 6: Final answer
    x = 18,362.83

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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.