Home / 13,270.79-19,908.80-4,385.77

Finding the Fourth Proportional to 13,270.79, 19,908.80 and 4,385.77

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Solution

The fourth proportional to 13,270.79, 19,908.80 and 4,385.77 is: 6,579.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,270.79 : 19,908.80 = 4,385.77 : x
  2. Step 2: Convert to fraction form
    13,270.79/19,908.80 = 4,385.77/x
  3. Step 3: Cross multiply
    13,270.79x = 19,908.80 × 4,385.77
  4. Step 4: Simplify right side
    13,270.79x = 87,315,378.97
  5. Step 5: Solve for x
    x = 87,315,378.97/13,270.79
  6. Step 6: Final answer
    x = 6,579.52

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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.