Home / 13,555.50-18,706.40-7,587.16

Finding the Fourth Proportional to 13,555.50, 18,706.40 and 7,587.16

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Solution

The fourth proportional to 13,555.50, 18,706.40 and 7,587.16 is: 10,470.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,555.50 : 18,706.40 = 7,587.16 : x
  2. Step 2: Convert to fraction form
    13,555.50/18,706.40 = 7,587.16/x
  3. Step 3: Cross multiply
    13,555.50x = 18,706.40 × 7,587.16
  4. Step 4: Simplify right side
    13,555.50x = 141,928,520.14
  5. Step 5: Solve for x
    x = 141,928,520.14/13,555.50
  6. Step 6: Final answer
    x = 10,470.18

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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.