Home / 13,263.51-18,305.42-8,561.49

Finding the Fourth Proportional to 13,263.51, 18,305.42 and 8,561.49

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Solution

The fourth proportional to 13,263.51, 18,305.42 and 8,561.49 is: 11,816.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,263.51 : 18,305.42 = 8,561.49 : x
  2. Step 2: Convert to fraction form
    13,263.51/18,305.42 = 8,561.49/x
  3. Step 3: Cross multiply
    13,263.51x = 18,305.42 × 8,561.49
  4. Step 4: Simplify right side
    13,263.51x = 156,721,627.47
  5. Step 5: Solve for x
    x = 156,721,627.47/13,263.51
  6. Step 6: Final answer
    x = 11,816.00

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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.