Home / 31,036.56-42,831.36-16,890.32

Finding the Fourth Proportional to 31,036.56, 42,831.36 and 16,890.32

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Solution

The fourth proportional to 31,036.56, 42,831.36 and 16,890.32 is: 23,309.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,036.56 : 42,831.36 = 16,890.32 : x
  2. Step 2: Convert to fraction form
    31,036.56/42,831.36 = 16,890.32/x
  3. Step 3: Cross multiply
    31,036.56x = 42,831.36 × 16,890.32
  4. Step 4: Simplify right side
    31,036.56x = 723,435,376.44
  5. Step 5: Solve for x
    x = 723,435,376.44/31,036.56
  6. Step 6: Final answer
    x = 23,309.14

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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.