Home / 21,295.90-31,962.89-21,216.52

Finding the Fourth Proportional to 21,295.90, 31,962.89 and 21,216.52

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Solution

The fourth proportional to 21,295.90, 31,962.89 and 21,216.52 is: 31,843.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,295.90 : 31,962.89 = 21,216.52 : x
  2. Step 2: Convert to fraction form
    21,295.90/31,962.89 = 21,216.52/x
  3. Step 3: Cross multiply
    21,295.90x = 31,962.89 × 21,216.52
  4. Step 4: Simplify right side
    21,295.90x = 678,141,294.94
  5. Step 5: Solve for x
    x = 678,141,294.94/21,295.90
  6. Step 6: Final answer
    x = 31,843.75

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1.5x scale

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.