Home / 28,579.53-42,935.00-20,165.40

Finding the Fourth Proportional to 28,579.53, 42,935.00 and 20,165.40

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Solution

The fourth proportional to 28,579.53, 42,935.00 and 20,165.40 is: 30,294.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,579.53 : 42,935.00 = 20,165.40 : x
  2. Step 2: Convert to fraction form
    28,579.53/42,935.00 = 20,165.40/x
  3. Step 3: Cross multiply
    28,579.53x = 42,935.00 × 20,165.40
  4. Step 4: Simplify right side
    28,579.53x = 865,801,348.17
  5. Step 5: Solve for x
    x = 865,801,348.17/28,579.53
  6. Step 6: Final answer
    x = 30,294.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.