Home / 10,407.88-15,605.58-4,778.50

Finding the Fourth Proportional to 10,407.88, 15,605.58 and 4,778.50

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Solution

The fourth proportional to 10,407.88, 15,605.58 and 4,778.50 is: 7,164.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,407.88 : 15,605.58 = 4,778.50 : x
  2. Step 2: Convert to fraction form
    10,407.88/15,605.58 = 4,778.50/x
  3. Step 3: Cross multiply
    10,407.88x = 15,605.58 × 4,778.50
  4. Step 4: Simplify right side
    10,407.88x = 74,571,264.03
  5. Step 5: Solve for x
    x = 74,571,264.03/10,407.88
  6. Step 6: Final answer
    x = 7,164.89

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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.