Home / 18,518.90-25,555.89-10,020.84

Finding the Fourth Proportional to 18,518.90, 25,555.89 and 10,020.84

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Solution

The fourth proportional to 18,518.90, 25,555.89 and 10,020.84 is: 13,828.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,518.90 : 25,555.89 = 10,020.84 : x
  2. Step 2: Convert to fraction form
    18,518.90/25,555.89 = 10,020.84/x
  3. Step 3: Cross multiply
    18,518.90x = 25,555.89 × 10,020.84
  4. Step 4: Simplify right side
    18,518.90x = 256,091,370.12
  5. Step 5: Solve for x
    x = 256,091,370.12/18,518.90
  6. Step 6: Final answer
    x = 13,828.65

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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.