Home / 19,945.98-29,900.88-12,528

Finding the Fourth Proportional to 19,945.98, 29,900.88 and 12,528

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Solution

The fourth proportional to 19,945.98, 29,900.88 and 12,528 is: 18,780.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,945.98 : 29,900.88 = 12,528 : x
  2. Step 2: Convert to fraction form
    19,945.98/29,900.88 = 12,528/x
  3. Step 3: Cross multiply
    19,945.98x = 29,900.88 × 12,528
  4. Step 4: Simplify right side
    19,945.98x = 374,598,224.64
  5. Step 5: Solve for x
    x = 374,598,224.64/19,945.98
  6. Step 6: Final answer
    x = 18,780.64

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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.