Home / 20,831.52-31,284.18-19,970.46

Finding the Fourth Proportional to 20,831.52, 31,284.18 and 19,970.46

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Solution

The fourth proportional to 20,831.52, 31,284.18 and 19,970.46 is: 29,991.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,831.52 : 31,284.18 = 19,970.46 : x
  2. Step 2: Convert to fraction form
    20,831.52/31,284.18 = 19,970.46/x
  3. Step 3: Cross multiply
    20,831.52x = 31,284.18 × 19,970.46
  4. Step 4: Simplify right side
    20,831.52x = 624,759,465.32
  5. Step 5: Solve for x
    x = 624,759,465.32/20,831.52
  6. Step 6: Final answer
    x = 29,991.06

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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.