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Finding the Fourth Proportional to 13,210.60, 18,087.77 and 13,210.60

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Solution

The fourth proportional to 13,210.60, 18,087.77 and 13,210.60 is: 18,087.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,210.60 : 18,087.77 = 13,210.60 : x
  2. Step 2: Convert to fraction form
    13,210.60/18,087.77 = 13,210.60/x
  3. Step 3: Cross multiply
    13,210.60x = 18,087.77 × 13,210.60
  4. Step 4: Simplify right side
    13,210.60x = 238,950,294.36
  5. Step 5: Solve for x
    x = 238,950,294.36/13,210.60
  6. Step 6: Final answer
    x = 18,087.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.