Home / 30,757.55-42,455.90-19,124.87

Finding the Fourth Proportional to 30,757.55, 42,455.90 and 19,124.87

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Solution

The fourth proportional to 30,757.55, 42,455.90 and 19,124.87 is: 26,398.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,757.55 : 42,455.90 = 19,124.87 : x
  2. Step 2: Convert to fraction form
    30,757.55/42,455.90 = 19,124.87/x
  3. Step 3: Cross multiply
    30,757.55x = 42,455.90 × 19,124.87
  4. Step 4: Simplify right side
    30,757.55x = 811,963,260.33
  5. Step 5: Solve for x
    x = 811,963,260.33/30,757.55
  6. Step 6: Final answer
    x = 26,398.83

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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.