Home / 14,190.84-21,288-7,937.40

Finding the Fourth Proportional to 14,190.84, 21,288 and 7,937.40

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Solution

The fourth proportional to 14,190.84, 21,288 and 7,937.40 is: 11,907.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,190.84 : 21,288 = 7,937.40 : x
  2. Step 2: Convert to fraction form
    14,190.84/21,288 = 7,937.40/x
  3. Step 3: Cross multiply
    14,190.84x = 21,288 × 7,937.40
  4. Step 4: Simplify right side
    14,190.84x = 168,971,371.20
  5. Step 5: Solve for x
    x = 168,971,371.20/14,190.84
  6. Step 6: Final answer
    x = 11,907.07

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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.