Home / 42,135.60-63,212.53-12,555.82

Finding the Fourth Proportional to 42,135.60, 63,212.53 and 12,555.82

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Solution

The fourth proportional to 42,135.60, 63,212.53 and 12,555.82 is: 18,836.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,135.60 : 63,212.53 = 12,555.82 : x
  2. Step 2: Convert to fraction form
    42,135.60/63,212.53 = 12,555.82/x
  3. Step 3: Cross multiply
    42,135.60x = 63,212.53 × 12,555.82
  4. Step 4: Simplify right side
    42,135.60x = 793,685,148.42
  5. Step 5: Solve for x
    x = 793,685,148.42/42,135.60
  6. Step 6: Final answer
    x = 18,836.45

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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.