Home / 28,455.06-42,671.65-19,663.32

Finding the Fourth Proportional to 28,455.06, 42,671.65 and 19,663.32

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Solution

The fourth proportional to 28,455.06, 42,671.65 and 19,663.32 is: 29,487.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,455.06 : 42,671.65 = 19,663.32 : x
  2. Step 2: Convert to fraction form
    28,455.06/42,671.65 = 19,663.32/x
  3. Step 3: Cross multiply
    28,455.06x = 42,671.65 × 19,663.32
  4. Step 4: Simplify right side
    28,455.06x = 839,066,308.88
  5. Step 5: Solve for x
    x = 839,066,308.88/28,455.06
  6. Step 6: Final answer
    x = 29,487.42

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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.