Home / 31,789.20-47,643.48-14,258.32

Finding the Fourth Proportional to 31,789.20, 47,643.48 and 14,258.32

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Solution

The fourth proportional to 31,789.20, 47,643.48 and 14,258.32 is: 21,369.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,789.20 : 47,643.48 = 14,258.32 : x
  2. Step 2: Convert to fraction form
    31,789.20/47,643.48 = 14,258.32/x
  3. Step 3: Cross multiply
    31,789.20x = 47,643.48 × 14,258.32
  4. Step 4: Simplify right side
    31,789.20x = 679,315,983.75
  5. Step 5: Solve for x
    x = 679,315,983.75/31,789.20
  6. Step 6: Final answer
    x = 21,369.40

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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.