Home / 30,493.60-45,666.58-21,107.32

Finding the Fourth Proportional to 30,493.60, 45,666.58 and 21,107.32

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Solution

The fourth proportional to 30,493.60, 45,666.58 and 21,107.32 is: 31,609.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,493.60 : 45,666.58 = 21,107.32 : x
  2. Step 2: Convert to fraction form
    30,493.60/45,666.58 = 21,107.32/x
  3. Step 3: Cross multiply
    30,493.60x = 45,666.58 × 21,107.32
  4. Step 4: Simplify right side
    30,493.60x = 963,899,117.37
  5. Step 5: Solve for x
    x = 963,899,117.37/30,493.60
  6. Step 6: Final answer
    x = 31,609.88

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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.