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Finding the Fourth Proportional to 35,653.80, 53,519.10 and 20,101.80

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Solution

The fourth proportional to 35,653.80, 53,519.10 and 20,101.80 is: 30,174.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,653.80 : 53,519.10 = 20,101.80 : x
  2. Step 2: Convert to fraction form
    35,653.80/53,519.10 = 20,101.80/x
  3. Step 3: Cross multiply
    35,653.80x = 53,519.10 × 20,101.80
  4. Step 4: Simplify right side
    35,653.80x = 1,075,830,244.38
  5. Step 5: Solve for x
    x = 1,075,830,244.38/35,653.80
  6. Step 6: Final answer
    x = 30,174.35

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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.