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Finding the Fourth Proportional to 9,999.63, 14,987.50 and 4,655.61

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Solution

The fourth proportional to 9,999.63, 14,987.50 and 4,655.61 is: 6,977.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,999.63 : 14,987.50 = 4,655.61 : x
  2. Step 2: Convert to fraction form
    9,999.63/14,987.50 = 4,655.61/x
  3. Step 3: Cross multiply
    9,999.63x = 14,987.50 × 4,655.61
  4. Step 4: Simplify right side
    9,999.63x = 69,775,954.88
  5. Step 5: Solve for x
    x = 69,775,954.88/9,999.63
  6. Step 6: Final answer
    x = 6,977.85

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1.5x scale

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.