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Finding the Fourth Proportional to 9,989.47, 14,986.02 and 4,994.45

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Solution

The fourth proportional to 9,989.47, 14,986.02 and 4,994.45 is: 7,492.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,989.47 : 14,986.02 = 4,994.45 : x
  2. Step 2: Convert to fraction form
    9,989.47/14,986.02 = 4,994.45/x
  3. Step 3: Cross multiply
    9,989.47x = 14,986.02 × 4,994.45
  4. Step 4: Simplify right side
    9,989.47x = 74,846,827.69
  5. Step 5: Solve for x
    x = 74,846,827.69/9,989.47
  6. Step 6: Final answer
    x = 7,492.58

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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.