Home / 31,036.64-42,831.34-16,890.26

Finding the Fourth Proportional to 31,036.64, 42,831.34 and 16,890.26

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Solution

The fourth proportional to 31,036.64, 42,831.34 and 16,890.26 is: 23,308.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,036.64 : 42,831.34 = 16,890.26 : x
  2. Step 2: Convert to fraction form
    31,036.64/42,831.34 = 16,890.26/x
  3. Step 3: Cross multiply
    31,036.64x = 42,831.34 × 16,890.26
  4. Step 4: Simplify right side
    31,036.64x = 723,432,468.75
  5. Step 5: Solve for x
    x = 723,432,468.75/31,036.64
  6. Step 6: Final answer
    x = 23,308.98

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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.