Home / 13,554.19-18,705.20-7,585.85

Finding the Fourth Proportional to 13,554.19, 18,705.20 and 7,585.85

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Solution

The fourth proportional to 13,554.19, 18,705.20 and 7,585.85 is: 10,468.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,554.19 : 18,705.20 = 7,585.85 : x
  2. Step 2: Convert to fraction form
    13,554.19/18,705.20 = 7,585.85/x
  3. Step 3: Cross multiply
    13,554.19x = 18,705.20 × 7,585.85
  4. Step 4: Simplify right side
    13,554.19x = 141,894,766.86
  5. Step 5: Solve for x
    x = 141,894,766.86/13,554.19
  6. Step 6: Final answer
    x = 10,468.70

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Half scale
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Double scale
Find fourth proportional to 13,555.19, 18,706.58 and 7,586.85
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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.