Home / 42,855.90-64,276.56-11,683.86

Finding the Fourth Proportional to 42,855.90, 64,276.56 and 11,683.86

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Solution

The fourth proportional to 42,855.90, 64,276.56 and 11,683.86 is: 17,523.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,855.90 : 64,276.56 = 11,683.86 : x
  2. Step 2: Convert to fraction form
    42,855.90/64,276.56 = 11,683.86/x
  3. Step 3: Cross multiply
    42,855.90x = 64,276.56 × 11,683.86
  4. Step 4: Simplify right side
    42,855.90x = 750,998,328.32
  5. Step 5: Solve for x
    x = 750,998,328.32/42,855.90
  6. Step 6: Final answer
    x = 17,523.80

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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.