Home / 30,458.31-45,681.84-13,814.34

Finding the Fourth Proportional to 30,458.31, 45,681.84 and 13,814.34

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Solution

The fourth proportional to 30,458.31, 45,681.84 and 13,814.34 is: 20,718.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,458.31 : 45,681.84 = 13,814.34 : x
  2. Step 2: Convert to fraction form
    30,458.31/45,681.84 = 13,814.34/x
  3. Step 3: Cross multiply
    30,458.31x = 45,681.84 × 13,814.34
  4. Step 4: Simplify right side
    30,458.31x = 631,064,469.59
  5. Step 5: Solve for x
    x = 631,064,469.59/30,458.31
  6. Step 6: Final answer
    x = 20,718.96

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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.