Home / 13,989.20-19,300.16-8,954.24

Finding the Fourth Proportional to 13,989.20, 19,300.16 and 8,954.24

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Solution

The fourth proportional to 13,989.20, 19,300.16 and 8,954.24 is: 12,353.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,989.20 : 19,300.16 = 8,954.24 : x
  2. Step 2: Convert to fraction form
    13,989.20/19,300.16 = 8,954.24/x
  3. Step 3: Cross multiply
    13,989.20x = 19,300.16 × 8,954.24
  4. Step 4: Simplify right side
    13,989.20x = 172,818,264.68
  5. Step 5: Solve for x
    x = 172,818,264.68/13,989.20
  6. Step 6: Final answer
    x = 12,353.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.