Home / 18,338.48-25,270.81-13,018.40

Finding the Fourth Proportional to 18,338.48, 25,270.81 and 13,018.40

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Solution

The fourth proportional to 18,338.48, 25,270.81 and 13,018.40 is: 17,939.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,338.48 : 25,270.81 = 13,018.40 : x
  2. Step 2: Convert to fraction form
    18,338.48/25,270.81 = 13,018.40/x
  3. Step 3: Cross multiply
    18,338.48x = 25,270.81 × 13,018.40
  4. Step 4: Simplify right side
    18,338.48x = 328,985,354.00
  5. Step 5: Solve for x
    x = 328,985,354.00/18,338.48
  6. Step 6: Final answer
    x = 17,939.62

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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.