Home / 18,605.07-25,646.55-11,421.72

Finding the Fourth Proportional to 18,605.07, 25,646.55 and 11,421.72

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Solution

The fourth proportional to 18,605.07, 25,646.55 and 11,421.72 is: 15,744.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,605.07 : 25,646.55 = 11,421.72 : x
  2. Step 2: Convert to fraction form
    18,605.07/25,646.55 = 11,421.72/x
  3. Step 3: Cross multiply
    18,605.07x = 25,646.55 × 11,421.72
  4. Step 4: Simplify right side
    18,605.07x = 292,927,713.07
  5. Step 5: Solve for x
    x = 292,927,713.07/18,605.07
  6. Step 6: Final answer
    x = 15,744.51

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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.