Home / 20,683.74-28,560.15-14,385.18

Finding the Fourth Proportional to 20,683.74, 28,560.15 and 14,385.18

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Solution

The fourth proportional to 20,683.74, 28,560.15 and 14,385.18 is: 19,863.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,683.74 : 28,560.15 = 14,385.18 : x
  2. Step 2: Convert to fraction form
    20,683.74/28,560.15 = 14,385.18/x
  3. Step 3: Cross multiply
    20,683.74x = 28,560.15 × 14,385.18
  4. Step 4: Simplify right side
    20,683.74x = 410,842,898.58
  5. Step 5: Solve for x
    x = 410,842,898.58/20,683.74
  6. Step 6: Final answer
    x = 19,863.09

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Half scale
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Double scale
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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.