Home / 15,831.99-21,840.84-10,165.23

Finding the Fourth Proportional to 15,831.99, 21,840.84 and 10,165.23

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Solution

The fourth proportional to 15,831.99, 21,840.84 and 10,165.23 is: 14,023.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,831.99 : 21,840.84 = 10,165.23 : x
  2. Step 2: Convert to fraction form
    15,831.99/21,840.84 = 10,165.23/x
  3. Step 3: Cross multiply
    15,831.99x = 21,840.84 × 10,165.23
  4. Step 4: Simplify right side
    15,831.99x = 222,017,161.99
  5. Step 5: Solve for x
    x = 222,017,161.99/15,831.99
  6. Step 6: Final answer
    x = 14,023.33

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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.