Home / 15,780.98-23,671.66-4,687.40

Finding the Fourth Proportional to 15,780.98, 23,671.66 and 4,687.40

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Solution

The fourth proportional to 15,780.98, 23,671.66 and 4,687.40 is: 7,031.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,780.98 : 23,671.66 = 4,687.40 : x
  2. Step 2: Convert to fraction form
    15,780.98/23,671.66 = 4,687.40/x
  3. Step 3: Cross multiply
    15,780.98x = 23,671.66 × 4,687.40
  4. Step 4: Simplify right side
    15,780.98x = 110,958,539.08
  5. Step 5: Solve for x
    x = 110,958,539.08/15,780.98
  6. Step 6: Final answer
    x = 7,031.16

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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.