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Finding the Fourth Proportional to 35,507.40, 49,003.14 and 20,402.99

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Solution

The fourth proportional to 35,507.40, 49,003.14 and 20,402.99 is: 28,157.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,507.40 : 49,003.14 = 20,402.99 : x
  2. Step 2: Convert to fraction form
    35,507.40/49,003.14 = 20,402.99/x
  3. Step 3: Cross multiply
    35,507.40x = 49,003.14 × 20,402.99
  4. Step 4: Simplify right side
    35,507.40x = 999,810,590.65
  5. Step 5: Solve for x
    x = 999,810,590.65/35,507.40
  6. Step 6: Final answer
    x = 28,157.81

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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.