Home / 42,136.96-63,216.64-12,554.88

Finding the Fourth Proportional to 42,136.96, 63,216.64 and 12,554.88

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Solution

The fourth proportional to 42,136.96, 63,216.64 and 12,554.88 is: 18,835.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,136.96 : 63,216.64 = 12,554.88 : x
  2. Step 2: Convert to fraction form
    42,136.96/63,216.64 = 12,554.88/x
  3. Step 3: Cross multiply
    42,136.96x = 63,216.64 × 12,554.88
  4. Step 4: Simplify right side
    42,136.96x = 793,677,329.20
  5. Step 5: Solve for x
    x = 793,677,329.20/42,136.96
  6. Step 6: Final answer
    x = 18,835.66

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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.