Home / 13,259.33-19,894.39-8,520.80

Finding the Fourth Proportional to 13,259.33, 19,894.39 and 8,520.80

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Solution

The fourth proportional to 13,259.33, 19,894.39 and 8,520.80 is: 12,784.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,259.33 : 19,894.39 = 8,520.80 : x
  2. Step 2: Convert to fraction form
    13,259.33/19,894.39 = 8,520.80/x
  3. Step 3: Cross multiply
    13,259.33x = 19,894.39 × 8,520.80
  4. Step 4: Simplify right side
    13,259.33x = 169,516,045.47
  5. Step 5: Solve for x
    x = 169,516,045.47/13,259.33
  6. Step 6: Final answer
    x = 12,784.66

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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.