Home / 21,867.60-32,801.40-12,997.20

Finding the Fourth Proportional to 21,867.60, 32,801.40 and 12,997.20

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Solution

The fourth proportional to 21,867.60, 32,801.40 and 12,997.20 is: 19,495.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,867.60 : 32,801.40 = 12,997.20 : x
  2. Step 2: Convert to fraction form
    21,867.60/32,801.40 = 12,997.20/x
  3. Step 3: Cross multiply
    21,867.60x = 32,801.40 × 12,997.20
  4. Step 4: Simplify right side
    21,867.60x = 426,326,356.08
  5. Step 5: Solve for x
    x = 426,326,356.08/21,867.60
  6. Step 6: Final answer
    x = 19,495.80

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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.