Home / 18,369.09-25,349.45-10,815.75

Finding the Fourth Proportional to 18,369.09, 25,349.45 and 10,815.75

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Solution

The fourth proportional to 18,369.09, 25,349.45 and 10,815.75 is: 14,925.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,369.09 : 25,349.45 = 10,815.75 : x
  2. Step 2: Convert to fraction form
    18,369.09/25,349.45 = 10,815.75/x
  3. Step 3: Cross multiply
    18,369.09x = 25,349.45 × 10,815.75
  4. Step 4: Simplify right side
    18,369.09x = 274,173,259.76
  5. Step 5: Solve for x
    x = 274,173,259.76/18,369.09
  6. Step 6: Final answer
    x = 14,925.79

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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.