Home / 42,788.04-64,188.21-13,208.41

Finding the Fourth Proportional to 42,788.04, 64,188.21 and 13,208.41

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Solution

The fourth proportional to 42,788.04, 64,188.21 and 13,208.41 is: 19,814.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,788.04 : 64,188.21 = 13,208.41 : x
  2. Step 2: Convert to fraction form
    42,788.04/64,188.21 = 13,208.41/x
  3. Step 3: Cross multiply
    42,788.04x = 64,188.21 × 13,208.41
  4. Step 4: Simplify right side
    42,788.04x = 847,824,034.38
  5. Step 5: Solve for x
    x = 847,824,034.38/42,788.04
  6. Step 6: Final answer
    x = 19,814.51

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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.