Home / 30,986.70-42,748.47-19,046.22

Finding the Fourth Proportional to 30,986.70, 42,748.47 and 19,046.22

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Solution

The fourth proportional to 30,986.70, 42,748.47 and 19,046.22 is: 26,275.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,986.70 : 42,748.47 = 19,046.22 : x
  2. Step 2: Convert to fraction form
    30,986.70/42,748.47 = 19,046.22/x
  3. Step 3: Cross multiply
    30,986.70x = 42,748.47 × 19,046.22
  4. Step 4: Simplify right side
    30,986.70x = 814,196,764.28
  5. Step 5: Solve for x
    x = 814,196,764.28/30,986.70
  6. Step 6: Final answer
    x = 26,275.68

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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.