Home / 13,365.86-18,402.66-11,771.40

Finding the Fourth Proportional to 13,365.86, 18,402.66 and 11,771.40

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Solution

The fourth proportional to 13,365.86, 18,402.66 and 11,771.40 is: 16,207.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,365.86 : 18,402.66 = 11,771.40 : x
  2. Step 2: Convert to fraction form
    13,365.86/18,402.66 = 11,771.40/x
  3. Step 3: Cross multiply
    13,365.86x = 18,402.66 × 11,771.40
  4. Step 4: Simplify right side
    13,365.86x = 216,625,071.92
  5. Step 5: Solve for x
    x = 216,625,071.92/13,365.86
  6. Step 6: Final answer
    x = 16,207.35

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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.