Home / 21,056.60-31,582.45-5,475.44

Finding the Fourth Proportional to 21,056.60, 31,582.45 and 5,475.44

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Solution

The fourth proportional to 21,056.60, 31,582.45 and 5,475.44 is: 8,212.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,056.60 : 31,582.45 = 5,475.44 : x
  2. Step 2: Convert to fraction form
    21,056.60/31,582.45 = 5,475.44/x
  3. Step 3: Cross multiply
    21,056.60x = 31,582.45 × 5,475.44
  4. Step 4: Simplify right side
    21,056.60x = 172,927,810.03
  5. Step 5: Solve for x
    x = 172,927,810.03/21,056.60
  6. Step 6: Final answer
    x = 8,212.52

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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.