Home / 9,988.74-14,989.79-4,145.34

Finding the Fourth Proportional to 9,988.74, 14,989.79 and 4,145.34

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Solution

The fourth proportional to 9,988.74, 14,989.79 and 4,145.34 is: 6,220.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,988.74 : 14,989.79 = 4,145.34 : x
  2. Step 2: Convert to fraction form
    9,988.74/14,989.79 = 4,145.34/x
  3. Step 3: Cross multiply
    9,988.74x = 14,989.79 × 4,145.34
  4. Step 4: Simplify right side
    9,988.74x = 62,137,755.35
  5. Step 5: Solve for x
    x = 62,137,755.35/9,988.74
  6. Step 6: Final answer
    x = 6,220.78

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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.