Home / 13,552.58-18,720.43-10,404.77

Finding the Fourth Proportional to 13,552.58, 18,720.43 and 10,404.77

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Solution

The fourth proportional to 13,552.58, 18,720.43 and 10,404.77 is: 14,372.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,552.58 : 18,720.43 = 10,404.77 : x
  2. Step 2: Convert to fraction form
    13,552.58/18,720.43 = 10,404.77/x
  3. Step 3: Cross multiply
    13,552.58x = 18,720.43 × 10,404.77
  4. Step 4: Simplify right side
    13,552.58x = 194,781,812.67
  5. Step 5: Solve for x
    x = 194,781,812.67/13,552.58
  6. Step 6: Final answer
    x = 14,372.30

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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.