Home / 30,933.39-42,688.14-16,786.23

Finding the Fourth Proportional to 30,933.39, 42,688.14 and 16,786.23

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Solution

The fourth proportional to 30,933.39, 42,688.14 and 16,786.23 is: 23,165.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,933.39 : 42,688.14 = 16,786.23 : x
  2. Step 2: Convert to fraction form
    30,933.39/42,688.14 = 16,786.23/x
  3. Step 3: Cross multiply
    30,933.39x = 42,688.14 × 16,786.23
  4. Step 4: Simplify right side
    30,933.39x = 716,572,936.31
  5. Step 5: Solve for x
    x = 716,572,936.31/30,933.39
  6. Step 6: Final answer
    x = 23,165.03

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Double scale
Find fourth proportional to 30,934.39, 42,689.52 and 16,787.23
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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.