Home / 13,555.88-18,706.56-7,587.80

Finding the Fourth Proportional to 13,555.88, 18,706.56 and 7,587.80

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Solution

The fourth proportional to 13,555.88, 18,706.56 and 7,587.80 is: 10,470.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,555.88 : 18,706.56 = 7,587.80 : x
  2. Step 2: Convert to fraction form
    13,555.88/18,706.56 = 7,587.80/x
  3. Step 3: Cross multiply
    13,555.88x = 18,706.56 × 7,587.80
  4. Step 4: Simplify right side
    13,555.88x = 141,941,635.97
  5. Step 5: Solve for x
    x = 141,941,635.97/13,555.88
  6. Step 6: Final answer
    x = 10,470.85

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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.