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Finding the Fourth Proportional to 9,389.80, 14,100.90 and 5,015.80

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Solution

The fourth proportional to 9,389.80, 14,100.90 and 5,015.80 is: 7,532.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,389.80 : 14,100.90 = 5,015.80 : x
  2. Step 2: Convert to fraction form
    9,389.80/14,100.90 = 5,015.80/x
  3. Step 3: Cross multiply
    9,389.80x = 14,100.90 × 5,015.80
  4. Step 4: Simplify right side
    9,389.80x = 70,727,294.22
  5. Step 5: Solve for x
    x = 70,727,294.22/9,389.80
  6. Step 6: Final answer
    x = 7,532.35

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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.