Home / 31,089.60-46,617.30-21,240

Finding the Fourth Proportional to 31,089.60, 46,617.30 and 21,240

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Solution

The fourth proportional to 31,089.60, 46,617.30 and 21,240 is: 31,848.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,089.60 : 46,617.30 = 21,240 : x
  2. Step 2: Convert to fraction form
    31,089.60/46,617.30 = 21,240/x
  3. Step 3: Cross multiply
    31,089.60x = 46,617.30 × 21,240
  4. Step 4: Simplify right side
    31,089.60x = 990,151,452.00
  5. Step 5: Solve for x
    x = 990,151,452.00/31,089.60
  6. Step 6: Final answer
    x = 31,848.32

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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.