Home / 13,165.77-19,579.32-12,750.48

Finding the Fourth Proportional to 13,165.77, 19,579.32 and 12,750.48

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Solution

The fourth proportional to 13,165.77, 19,579.32 and 12,750.48 is: 18,961.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,165.77 : 19,579.32 = 12,750.48 : x
  2. Step 2: Convert to fraction form
    13,165.77/19,579.32 = 12,750.48/x
  3. Step 3: Cross multiply
    13,165.77x = 19,579.32 × 12,750.48
  4. Step 4: Simplify right side
    13,165.77x = 249,645,728.07
  5. Step 5: Solve for x
    x = 249,645,728.07/13,165.77
  6. Step 6: Final answer
    x = 18,961.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.