Home / 30,785.38-42,483.76-16,638.19

Finding the Fourth Proportional to 30,785.38, 42,483.76 and 16,638.19

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Solution

The fourth proportional to 30,785.38, 42,483.76 and 16,638.19 is: 22,960.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,785.38 : 42,483.76 = 16,638.19 : x
  2. Step 2: Convert to fraction form
    30,785.38/42,483.76 = 16,638.19/x
  3. Step 3: Cross multiply
    30,785.38x = 42,483.76 × 16,638.19
  4. Step 4: Simplify right side
    30,785.38x = 706,852,722.99
  5. Step 5: Solve for x
    x = 706,852,722.99/30,785.38
  6. Step 6: Final answer
    x = 22,960.66

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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.