Home / 13,555.38-18,706.42-7,587.05

Finding the Fourth Proportional to 13,555.38, 18,706.42 and 7,587.05

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Solution

The fourth proportional to 13,555.38, 18,706.42 and 7,587.05 is: 10,470.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,555.38 : 18,706.42 = 7,587.05 : x
  2. Step 2: Convert to fraction form
    13,555.38/18,706.42 = 7,587.05/x
  3. Step 3: Cross multiply
    13,555.38x = 18,706.42 × 7,587.05
  4. Step 4: Simplify right side
    13,555.38x = 141,926,562.83
  5. Step 5: Solve for x
    x = 141,926,562.83/13,555.38
  6. Step 6: Final answer
    x = 10,470.13

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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.