Home / 13,154.43-18,153.55-7,186.65

Finding the Fourth Proportional to 13,154.43, 18,153.55 and 7,186.65

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Solution

The fourth proportional to 13,154.43, 18,153.55 and 7,186.65 is: 9,917.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,154.43 : 18,153.55 = 7,186.65 : x
  2. Step 2: Convert to fraction form
    13,154.43/18,153.55 = 7,186.65/x
  3. Step 3: Cross multiply
    13,154.43x = 18,153.55 × 7,186.65
  4. Step 4: Simplify right side
    13,154.43x = 130,463,210.11
  5. Step 5: Solve for x
    x = 130,463,210.11/13,154.43
  6. Step 6: Final answer
    x = 9,917.82

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Half scale
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Double scale
Find fourth proportional to 13,155.43, 18,154.93 and 7,187.65
Similar ratio
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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.