Home / 22,119.77-30,524.98-12,688.13

Finding the Fourth Proportional to 22,119.77, 30,524.98 and 12,688.13

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Solution

The fourth proportional to 22,119.77, 30,524.98 and 12,688.13 is: 17,509.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,119.77 : 30,524.98 = 12,688.13 : x
  2. Step 2: Convert to fraction form
    22,119.77/30,524.98 = 12,688.13/x
  3. Step 3: Cross multiply
    22,119.77x = 30,524.98 × 12,688.13
  4. Step 4: Simplify right side
    22,119.77x = 387,304,914.49
  5. Step 5: Solve for x
    x = 387,304,914.49/22,119.77
  6. Step 6: Final answer
    x = 17,509.45

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Half scale
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Double scale
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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.