Home / 18,369.23-25,349.49-9,985.73

Finding the Fourth Proportional to 18,369.23, 25,349.49 and 9,985.73

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Solution

The fourth proportional to 18,369.23, 25,349.49 and 9,985.73 is: 13,780.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,369.23 : 25,349.49 = 9,985.73 : x
  2. Step 2: Convert to fraction form
    18,369.23/25,349.49 = 9,985.73/x
  3. Step 3: Cross multiply
    18,369.23x = 25,349.49 × 9,985.73
  4. Step 4: Simplify right side
    18,369.23x = 253,133,036.03
  5. Step 5: Solve for x
    x = 253,133,036.03/18,369.23
  6. Step 6: Final answer
    x = 13,780.28

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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.