Home / 28,658.18-42,982.40-13,072.16

Finding the Fourth Proportional to 28,658.18, 42,982.40 and 13,072.16

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Solution

The fourth proportional to 28,658.18, 42,982.40 and 13,072.16 is: 19,606.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,658.18 : 42,982.40 = 13,072.16 : x
  2. Step 2: Convert to fraction form
    28,658.18/42,982.40 = 13,072.16/x
  3. Step 3: Cross multiply
    28,658.18x = 42,982.40 × 13,072.16
  4. Step 4: Simplify right side
    28,658.18x = 561,872,809.98
  5. Step 5: Solve for x
    x = 561,872,809.98/28,658.18
  6. Step 6: Final answer
    x = 19,606.02

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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.