Home / 30,783.78-42,509.61-23,217.17

Finding the Fourth Proportional to 30,783.78, 42,509.61 and 23,217.17

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Solution

The fourth proportional to 30,783.78, 42,509.61 and 23,217.17 is: 32,060.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,783.78 : 42,509.61 = 23,217.17 : x
  2. Step 2: Convert to fraction form
    30,783.78/42,509.61 = 23,217.17/x
  3. Step 3: Cross multiply
    30,783.78x = 42,509.61 × 23,217.17
  4. Step 4: Simplify right side
    30,783.78x = 986,952,629.46
  5. Step 5: Solve for x
    x = 986,952,629.46/30,783.78
  6. Step 6: Final answer
    x = 32,060.80

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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.