Home / 28,783.49-39,734.55-20,292.53

Finding the Fourth Proportional to 28,783.49, 39,734.55 and 20,292.53

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Solution

The fourth proportional to 28,783.49, 39,734.55 and 20,292.53 is: 28,013.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,783.49 : 39,734.55 = 20,292.53 : x
  2. Step 2: Convert to fraction form
    28,783.49/39,734.55 = 20,292.53/x
  3. Step 3: Cross multiply
    28,783.49x = 39,734.55 × 20,292.53
  4. Step 4: Simplify right side
    28,783.49x = 806,314,349.24
  5. Step 5: Solve for x
    x = 806,314,349.24/28,783.49
  6. Step 6: Final answer
    x = 28,013.09

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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.