Home / 31,036.84-42,831.74-16,890.60

Finding the Fourth Proportional to 31,036.84, 42,831.74 and 16,890.60

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Solution

The fourth proportional to 31,036.84, 42,831.74 and 16,890.60 is: 23,309.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,036.84 : 42,831.74 = 16,890.60 : x
  2. Step 2: Convert to fraction form
    31,036.84/42,831.74 = 16,890.60/x
  3. Step 3: Cross multiply
    31,036.84x = 42,831.74 × 16,890.60
  4. Step 4: Simplify right side
    31,036.84x = 723,453,787.64
  5. Step 5: Solve for x
    x = 723,453,787.64/31,036.84
  6. Step 6: Final answer
    x = 23,309.52

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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.