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Finding the Fourth Proportional to 35,507.99, 48,999.38 and 20,390.01

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Solution

The fourth proportional to 35,507.99, 48,999.38 and 20,390.01 is: 28,137.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,507.99 : 48,999.38 = 20,390.01 : x
  2. Step 2: Convert to fraction form
    35,507.99/48,999.38 = 20,390.01/x
  3. Step 3: Cross multiply
    35,507.99x = 48,999.38 × 20,390.01
  4. Step 4: Simplify right side
    35,507.99x = 999,097,952.81
  5. Step 5: Solve for x
    x = 999,097,952.81/35,507.99
  6. Step 6: Final answer
    x = 28,137.27

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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.