Home / 13,600.64-18,767.90-7,551.21

Finding the Fourth Proportional to 13,600.64, 18,767.90 and 7,551.21

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Solution

The fourth proportional to 13,600.64, 18,767.90 and 7,551.21 is: 10,420.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,600.64 : 18,767.90 = 7,551.21 : x
  2. Step 2: Convert to fraction form
    13,600.64/18,767.90 = 7,551.21/x
  3. Step 3: Cross multiply
    13,600.64x = 18,767.90 × 7,551.21
  4. Step 4: Simplify right side
    13,600.64x = 141,720,337.85
  5. Step 5: Solve for x
    x = 141,720,337.85/13,600.64
  6. Step 6: Final answer
    x = 10,420.12

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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.