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Finding the Fourth Proportional to 35,338.60, 53,007.90 and 18,692.20

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Solution

The fourth proportional to 35,338.60, 53,007.90 and 18,692.20 is: 28,038.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,338.60 : 53,007.90 = 18,692.20 : x
  2. Step 2: Convert to fraction form
    35,338.60/53,007.90 = 18,692.20/x
  3. Step 3: Cross multiply
    35,338.60x = 53,007.90 × 18,692.20
  4. Step 4: Simplify right side
    35,338.60x = 990,834,268.38
  5. Step 5: Solve for x
    x = 990,834,268.38/35,338.60
  6. Step 6: Final answer
    x = 28,038.30

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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.